--- title: "Best Back Stretches on Yoga Ball for Pain Relief and Flexibility" canonical: "https://manifestationes.com/best-back-stretches-on-yoga-ball/" author: "Coinneach Anderson" published: "2025-11-29T15:50:55+00:00" modified: "2026-10-17T01:54:35+00:00" language: "en-US" site: "Manifestationes" description: "Back pain relief and improved posture start with the right stretches. Using a yoga ball enhances stretch effectiveness and balance. A yoga ball offers…" categories: "Yoga & Wellness Equipment" attribution: "Manifestationes (https://manifestationes.com/)" --- # Best Back Stretches on Yoga Ball for Pain Relief and Flexibility **Back pain relief and improved posture start with the right stretches. Using a yoga ball enhances stretch effectiveness and balance.** A yoga ball offers gentle support for your spine while you stretch. It helps loosen tight muscles and improves flexibility safely. Different sizes and firmness levels suit various body types and needs. Yoga balls also aid physical therapy and core strengthening exercises. Combining stretches with massage balls targets muscle knots and trigger points. These tools boost circulation and reduce soreness after workouts. Whether for exercise, pregnancy, or therapy, yoga balls provide versatile support. Choosing the right ball ensures comfort and stability during stretches. This guide covers the best back stretches on a yoga ball for lasting relief and better movement. Start incorporating these simple exercises to feel more relaxed and balanced. ## [Trideer Yoga Ball](https://www.amazon.com/dp/B07DK9QZV9?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Trideer Yoga Ball for Exercise, Pregnancy & Birthing, 5 Sizes Exercise Ball for Physical Therapy, Stability, Fitness, Quick Pump Included](https://m.media-amazon.com/images/I/31sym2MdcWL._SL500_.jpg)](https://www.amazon.com/dp/B07DK9QZV9?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **Trideer Yoga Ball** is ideal for individuals seeking a versatile fitness tool for **exercise, pregnancy, and physical therapy**. Whether you are a fitness enthusiast looking to improve stability and core strength, an expectant mother preparing for childbirth, or someone undergoing rehabilitation, this **5 Sizes Exercise Ball** offers customizable support and comfort tailored to your needs. ### Pros: - Comes in **5 different sizes** to fit various body types and exercise requirements - Includes a **quick pump** for easy and convenient inflation - Made by trusted **Trideer brand** ensuring quality and durability - Supports a wide range of activities including **physical therapy, stability training, fitness workouts, and birthing exercises** - Lightweight design at approximately **2.2 pounds** for easy portability ### Cons: - Only available in **black color**, limiting aesthetic choices - May require frequent reinflation depending on usage and size The **Trideer Yoga Ball** stands out with its range of sizes, accommodating users of different heights and exercise intensities. Its sturdy construction supports various fitness and therapeutic routines, enhancing balance, flexibility, and muscle tone. The included quick pump simplifies setup, making it accessible for users of all levels, from beginners to advanced practitioners. Designed with both function and comfort in mind, this exercise ball is especially beneficial for pregnant women aiming to improve posture and prepare for labor through gentle, supportive movements. Its versatility extends to rehabilitation exercises, helping users regain strength and stability safely. Overall, the **Trideer Yoga Ball** offers a practical, multi-purpose solution for improving physical health and wellness. ## [Acupoint Physical Massage Therapy Ball Set](https://www.amazon.com/dp/B01IL7SKUU?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Acupoint Physical Massage Therapy Ball Set - Ideal for Yoga, Deep Tissue Massage, Trigger Point Therapy and Myofascial Release Physical Therapy Equipment](https://m.media-amazon.com/images/I/41vxukawLaL._SL500_.jpg)](https://www.amazon.com/dp/B01IL7SKUU?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **Acupoint Physical Massage Therapy Ball Set** is perfect for individuals seeking effective relief from muscle tension, stiffness, and pain. Ideal for yoga enthusiasts, athletes, and anyone undergoing physical therapy, this set supports deep tissue massage, trigger point therapy, and myofascial release to enhance overall muscle health and flexibility. If you’re looking for a compact and versatile tool to complement your wellness routine, this product is an excellent choice. ### Pros: - Compact size (2.5 inches) makes it portable and easy to use anywhere. - Durable and lightweight design (only 0.0198 pounds) ensures convenience. - Effective for deep tissue massage, trigger point therapy, and myofascial release. - Enhances recovery and flexibility during yoga and physical therapy sessions. - Bright blue color makes it easy to locate among other equipment. ### Cons: - Small size may not be suitable for large muscle groups requiring broader coverage. - Not ideal for users looking for electronic or vibration massage features. - Requires some knowledge of massage techniques for optimal use. The **Acupoint Physical Massage Therapy Ball Set** offers a highly effective way to target specific muscle areas with precision. Its compact dimensions and lightweight design allow users to carry it easily, making it convenient for use at home, the gym, or during travel. The balls are crafted to provide firm pressure, which is essential for deep tissue massage and breaking down muscle knots through trigger point therapy. This helps enhance blood circulation and promotes faster muscle recovery after workouts or physical exertion. Additionally, this therapy ball set supports myofascial release, a technique that alleviates muscle tightness and improves mobility by releasing tension in the connective tissue surrounding muscles. For yoga practitioners, it complements stretching routines by easing muscle stiffness and preventing injury. Overall, the **Acupoint Physical Massage Therapy Ball Set** is a versatile and practical tool designed to improve muscle health, making it a valuable addition to any wellness or rehabilitation program. ## [Kieba Massage Lacrosse Balls](https://www.amazon.com/dp/B01CKJHJRU?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Kieba Massage Lacrosse Balls for Myofascial Release, Trigger Point Therapy, Muscle Knots, and Yoga Therapy. Set of 2 Firm Balls (2 Orange)](https://m.media-amazon.com/images/I/51Lv7lhleCL._SL500_.jpg)](https://www.amazon.com/dp/B01CKJHJRU?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) Ideal for fitness enthusiasts, athletes, and individuals experiencing muscle tension or stiffness, the **Kieba Massage Lacrosse Balls** are perfect for those seeking effective **myofascial release** and **trigger point therapy** at home or in a yoga practice. If you want to relieve **muscle knots** and improve flexibility, this set of two firm, vibrant **orange balls** offers a convenient and durable solution. ### Pros: - Durable and firm texture ideal for deep tissue massage - Compact and portable set of two balls for targeted relief - Bright orange color makes them easy to locate among workout gear - Lightweight design (0.5 pounds) for ease of use and transport - Versatile for use in yoga therapy and various muscle recovery routines ### Cons: - Firmness may be too intense for beginners or sensitive areas - Limited to small muscle groups due to ball size - No instructional guide included for beginners The **Kieba Massage Lacrosse Balls** are designed to provide targeted pressure to relieve tension in tight muscles effectively. Their firm construction ensures optimal compression for breaking up adhesions and promoting blood flow, which can accelerate muscle recovery. The set of two allows for double application or use on larger muscle groups, enhancing therapeutic benefits during self-massage or assisted sessions. These balls are lightweight and easy to handle, making them a practical addition to any wellness routine. Whether integrated into yoga therapy or used independently, the lacrosse balls help improve mobility and reduce discomfort from muscle knots. Their bright orange color makes them simple to spot, ensuring they are always ready for use when muscle relief is needed. ## [Yoga Tune Up® Therapy Balls In Tote](https://www.amazon.com/dp/B00ERF6X4G?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![YOGA TUNE UP® Therapy Balls in Tote by Tune Up Fitness - Massage Balls for Trigger Point, Pressure Point & Myofascial Release - Use as Single or Peanut Ball for Pain Relief & Relaxation (Aqua Blue)](https://m.media-amazon.com/images/I/41GOVZXNv0L._SL500_.jpg)](https://www.amazon.com/dp/B00ERF6X4G?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **YOGA TUNE UP® Therapy Balls** in Tote are ideal for individuals looking for an effective solution to relieve **muscle tension**, **trigger points**, and **myofascial pain**. Whether you’re an athlete, someone who practices yoga regularly, or an individual seeking relief from muscle knots and tightness, these **massage balls** are perfect for you. They cater to anyone who values **portable** and **versatile** tools for **pain relief** and **relaxation**. ### Pros: - **Portable** and easy to carry with included tote. - **Versatile** use as a single ball or a peanut ball. - **Durable** and designed for effective **pressure point** therapy. - **Ideal** for **trigger point** and **myofascial release**. ### Cons: - **May require practice** to use effectively for beginners. - **Limited color option** available (Aqua Blue only). The **YOGA TUNE UP® Therapy Balls** offer **exceptional features** that contribute to their effectiveness and appeal. Their **compact size** (2.5 inches in height, width, and 5.0 inches in length) makes them incredibly **portable**, fitting easily into a gym bag or handbag. This **portability** allows users to carry them to the gym, office, or even when traveling, ensuring that **pain relief** is always within reach. Additionally, the **tote** included with the purchase further enhances their **convenience**, allowing for organized storage and easy access whenever needed. Furthermore, the **versatile design** of these therapy balls allows them to be used individually or in tandem as a **peanut ball**, offering **customized therapy** for different parts of the body. The **durable material** ensures that the balls maintain their shape and provide consistent pressure over time, making them a **reliable tool** for **muscle recovery**. The **aqua blue color** adds a touch of style, making them visually appealing as well. Overall, these features make the **YOGA TUNE UP® Therapy Balls** an excellent investment for anyone serious about maintaining their **physical well-being**. ## [Apexup Yoga Ball Exercise Ball](https://www.amazon.com/dp/B0CGLQ8XNN?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![APEXUP Yoga Ball Exercise Ball, Anti Slip Stability Ball Chair, Heavy Duty Large Gym Ball for Fitness, Balance, Core Workout and Physical Therapy (L (23](https://m.media-amazon.com/images/I/41NG4qlGFHL._SL500_.jpg)](https://www.amazon.com/dp/B0CGLQ8XNN?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **APEXUP Yoga Ball Exercise Ball** is ideal for individuals seeking to improve their **fitness**, **balance**, and **core strength**. Whether you are a beginner starting physical therapy, an office worker looking for an ergonomic alternative to a traditional chair, or a fitness enthusiast aiming to enhance your workout routine, this **anti-slip stability ball chair** is designed to support your needs effectively. ### Pros: - **Heavy duty and durable** construction supports various exercises and daily use. - **Anti-slip surface** ensures safety and stability during workouts or sitting. - Versatile for **fitness, balance training, core workouts, and physical therapy**. - Lightweight design at just **2.0 pounds** for easy portability. - Suitable size range of **23″ to 26″ (65cm)** fits most users comfortably. ### Cons: - May require occasional inflation to maintain optimal firmness. - Lack of color variety, available only in **black**. - Not intended for high-impact exercises or heavy lifting. The **APEXUP Yoga Ball Exercise Ball** features a robust, **heavy-duty design** that enhances its longevity and reliability for multiple fitness activities. Its **anti-slip surface** provides excellent grip, reducing the risk of slipping during dynamic movements or while used as a stability chair. This makes it an excellent tool not only for workouts but also as a supportive seating option that promotes better posture and core engagement throughout the day. With its ideal size of **23″ to 26″** and lightweight construction, the ball offers versatility and convenience, allowing users to integrate it easily into their home or office environments. This product supports a wide range of exercises aimed at improving **balance, flexibility, and core strength**, making it a valuable addition for anyone committed to a healthier lifestyle or recovery process. The durability and safety features ensure consistent performance and peace of mind during use. ## [Japanese Craftsmanship Physical Massage Therapy Ball Set](https://www.amazon.com/dp/B0D25SKZS1?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Japanese Craftsmanship Physical Massage Therapy Ball Set - Ideal for Yoga, Deep Tissue Massage,Yoga & Trigger Point Treatments. Set - 2 Extra Firm Balls W/Mesh Bag, Blue](https://m.media-amazon.com/images/I/41HgmaVQgdL._SL500_.jpg)](https://www.amazon.com/dp/B0D25SKZS1?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **Japanese Craftsmanship Physical Massage Therapy Ball Set** is perfect for individuals seeking effective relief from muscle tension and stress through targeted therapy. Ideal for yoga practitioners, athletes, and anyone interested in deep tissue massage or trigger point treatments, this set offers a convenient way to enhance physical wellness and flexibility at home or on the go. ### Pros: - Made with **extra firm material** ensuring deep tissue effectiveness - Comes in a **portable mesh bag** for easy storage and transport - Perfect size (**1.0 inch**) for precise trigger point therapy - **Durable blue balls** crafted with Japanese precision and quality - Lightweight (**0.33 pounds**) and easy to handle during exercises ### Cons: - Extra firm texture might be too intense for beginners or sensitive users - Set only includes two balls, which may limit versatility for some routines The **MAROJAP** brand has designed these massage balls with a compact size and superior firmness to target stubborn muscle knots effectively. Their precise dimensions make them ideal for pinpointing pressure on muscles during **yoga** or **trigger point treatments**, providing enhanced relief and improved circulation. The inclusion of a mesh bag adds convenience, allowing users to carry the set anywhere and maintain cleanliness. Crafted with Japanese attention to detail, these balls provide a consistent and firm massage experience that supports muscle recovery and flexibility. Whether used post-workout or during relaxation, the therapy balls help reduce soreness and improve mobility, making them a valuable addition to any wellness routine. Their lightweight design ensures ease of use without causing hand fatigue, further enhancing the user experience. ## [Massage Lacrosse Balls For Myofascial Release](https://www.amazon.com/dp/B0C9BZT5HJ?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Massage Lacrosse Balls for Myofascial Release,Yoga Deep Tissue Massage,Trigger Point Therapy and Foot Plantar Fasciitis,Muscle Soreness Massager Ball (2Pack,Deep Blue and Purple)](https://m.media-amazon.com/images/I/31tUglvW2aL._SL500_.jpg)](https://www.amazon.com/dp/B0C9BZT5HJ?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) Ideal for individuals seeking effective relief from muscle tension, soreness, and plantar fasciitis, the **Massage Lacrosse Balls for Myofascial Release** are perfect for athletes, yoga practitioners, and anyone in need of deep tissue massage therapy. These balls cater to those who want a portable, easy-to-use tool for **trigger point therapy** and muscle recovery at home or on the go. ### Pros: - Compact and lightweight design makes them highly portable and easy to use anywhere - Dual-pack includes two colors: **Deep Blue** and **Purple** for variety - Effective for **myofascial release**, **deep tissue massage**, and relieving **foot plantar fasciitis** - Durable construction ensures long-lasting use - Perfect size (2.5 inches) for targeting specific muscle groups and trigger points ### Cons: - Firm texture may be uncomfortable for beginners or those with very sensitive muscles - Limited to manual use, requiring user effort and technique for best results The **Aegero Massage Lacrosse Balls** stand out due to their precise size and firm texture, which allows for targeted pressure on tight muscles and knots. Their compact dimensions (2.5 inches in height, width, and length) make them ideal for reaching difficult areas such as the back, shoulders, and feet. Users benefit from enhanced blood circulation and faster muscle recovery when incorporating these balls into their routine, whether after intense workouts or long hours of standing. Designed with versatility in mind, these massage balls serve multiple purposes including **yoga deep tissue massage** and **trigger point therapy**. The inclusion of two distinct colors not only adds visual appeal but also allows users to designate each ball for specific muscle groups or different family members. Overall, these massage lacrosse balls provide an affordable, convenient solution for managing muscle soreness and improving overall mobility. ## [Chirp Cloud Peanut Mobility Ball](https://www.amazon.com/dp/B09R9DHL3J?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Chirp Cloud Peanut Mobility Ball for The Back, Physical Therapy Massager for Adults, Exercise Balance Ball, Sensory Therapy Toys for Autism & ADHD - 2 Pack (Mint 100x50cm, Black 60x30cm](https://m.media-amazon.com/images/I/41rGQ1NCRLL._SL500_.jpg)](https://www.amazon.com/dp/B09R9DHL3J?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **Chirp Cloud Peanut Mobility Ball** is an excellent choice for individuals seeking effective physical therapy tools, adults looking to improve their balance and core strength, and parents or therapists who work with children with **Autism** or **ADHD**. This versatile set is designed to cater to a wide range of users who need sensory stimulation, balance training, or back relief through gentle exercise and massage. ### Pros: - Comes in a convenient 2-pack with different sizes (**Mint 100x50cm** and **Black 60x30cm**) to suit various therapy and exercise needs. - Durable and high-quality construction from the trusted **Chirp** brand ensures long-lasting use. - Supports multiple uses including physical therapy, sensory therapy, balance exercises, and back massages. - Helps improve posture, core strength, and sensory integration for individuals with special needs. - Lightweight and portable, weighing approximately **4.81 pounds**, making it easy to carry and store. ### Cons: - May require some supervision or guidance for younger children during use. - Not suitable for very high-impact exercise routines. - The size difference might limit simultaneous use for users needing the same size ball. The **Chirp Cloud Peanut Mobility Ball** stands out with its unique peanut shape, which offers better stability compared to traditional round exercise balls. This design allows users to perform targeted back massages and physical therapy exercises with greater control and comfort. The larger mint-colored ball is perfect for adults or older children, while the smaller black ball caters to younger users or those with smaller frames, making this set highly adaptable. Both balls are crafted with durable materials from the reputable **Chirp** manufacturer, ensuring they withstand regular use. Their dual purpose as physical therapy massagers and sensory therapy toys makes them invaluable tools for improving balance, coordination, and sensory processing. Whether used for strengthening core muscles or providing soothing sensory input for individuals with **Autism** or **ADHD**, these mobility balls deliver tangible benefits that enhance physical and mental well-being. ## [Rad Rounds](https://www.amazon.com/dp/B015WNWH3W?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![RAD Rounds – Extra Soft Yoga Deep Tissue Massage Ball Set – Myofascial Release Balls for Feet, Back, Neck, Jaw & Forearms – Trigger Point & Mobility Therapy (3-Pack)](https://m.media-amazon.com/images/I/31+ClFZvWIL._SL500_.jpg)](https://www.amazon.com/dp/B015WNWH3W?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **RAD Rounds – Extra Soft Yoga Deep Tissue Massage Ball Set** is ideal for individuals seeking effective **myofascial release** and **trigger point therapy** to alleviate muscle tension and improve mobility. Whether you are an athlete, yoga enthusiast, or someone dealing with chronic muscle pain in areas like the **feet, back, neck, jaw,** or **forearms**, this set is designed to provide targeted relief and enhance recovery. ### Pros: - Extra soft texture for comfortable deep tissue massage - Compact 3-pack allows for versatile use on multiple body parts - Durable construction suitable for frequent use - Facilitates myofascial release and improves mobility effectively - Lightweight and portable with dimensions of 2.0 x 2.0 x 5.0 inches ### Cons: - May be too soft for users preferring firmer pressure - Limited to small muscle groups, not suitable for large muscle areas - Requires proper technique for optimal benefits The **RAD Rounds** come in a convenient 3-pack, each ball designed with an extra soft feel to provide deep tissue massage without causing discomfort. Their ergonomic shape allows users to precisely target **trigger points** and tight muscle areas, facilitating effective **myofascial release**. This helps reduce muscle soreness, improve blood flow, and enhance overall flexibility. The lightweight design makes it easy to carry and use anytime, whether at home, the gym, or during travel. Made by the reputable **RAD** brand, these balls combine quality materials and thoughtful design to offer a reliable tool for **mobility therapy**. Users can experience significant relief in commonly tight areas like the **neck, jaw, and forearms**, helping to reduce tension headaches, improve posture, and support recovery from physical activity. The set’s versatility makes it a valuable addition to any wellness routine focused on muscle health and relaxation. ## [Tune Up Fitness – Coregeous Ball](https://www.amazon.com/dp/B00NQIUI96?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) [![Tune Up Fitness – Coregeous Ball | Psoas Release Tool, Abdominal, Belly & Lower Back Release | Core Ball, Exercise Ball for Low Back, Stress & Digestive Relief, Improved Breathing & Sleep (Iris)](https://m.media-amazon.com/images/I/41yng4OMW9L._SL500_.jpg)](https://www.amazon.com/dp/B00NQIUI96?tag=manifestationes-20&linkCode=ogi&th=1&psc=1) The **Tune Up Fitness – Coregeous Ball** is ideal for individuals seeking effective relief from abdominal, belly, and lower back tension. This product is perfect for those who experience tightness in the psoas muscle, suffer from digestive discomfort, or want to improve their breathing and sleep quality. Fitness enthusiasts, yoga practitioners, and anyone looking to enhance core strength and reduce stress will find this tool highly beneficial. ### Pros: - Compact and lightweight design (9.0 inches in height, width, and length; 0.22 pounds) for easy portability and storage. - Specifically targets the **psoas muscle** for effective release and relief. - Enhances **core strength** and supports abdominal and lower back health. - Provides benefits such as **stress reduction**, improved **digestion**, and better **breathing**. - Made by the reputable brand **Tune Up Fitness Worldwide** ensuring quality and durability. - Attractive **Iris color** adds a pleasing aesthetic to your fitness gear. ### Cons: - May require guidance or instruction to use effectively for beginners. - Limited size might not be suitable for all body types or preferences. - Focused primarily on core and lower back, may not address other muscle groups. The **Coregeous Ball** by **Tune Up Fitness** is designed to deliver targeted relief to the **psoas muscle**, which plays a crucial role in posture, movement, and core stability. By applying pressure to this area, users can release tension that often accumulates due to prolonged sitting or physical activity. This tool’s size and shape make it highly effective for performing exercises that improve flexibility and mobility in the lower back and abdominal region. Beyond muscle release, the Coregeous Ball supports several health benefits including improved **digestion** and respiratory function. Its use encourages deep breathing and relaxation, which can lead to better sleep quality and reduced overall stress. Lightweight and portable, it is easy to incorporate into daily routines at home or on the go, making it a versatile addition to any wellness or fitness regimen. ## Frequently Asked Questions ### What Are The Best Yoga Balls For Back Stretches? The Trideer Yoga Ball and APEXUP Stability Ball are ideal. They offer firm support and improve core strength during stretches. ### How Do Massage Therapy Balls Aid Back Pain Relief? Massage balls like Kieba and Tune Up Therapy Balls target trigger points. They release muscle knots and improve blood flow, reducing pain. ### Can Yoga Balls Improve Posture And Stability? Yes, yoga balls enhance balance and posture. Using them regularly strengthens core muscles, supporting the spine and reducing back strain. ### What Size Yoga Ball Is Best For Back Exercises? Choose a ball size based on your height. Generally, 55cm suits under 5’4”, 65cm for 5’4”-5’10”, and 75cm for taller users. ### Are Peanut-shaped Massage Balls Effective For Back Therapy? Yes, peanut-shaped balls like Chirp Cloud target spine muscles precisely. They help release tension and improve mobility in the back area. ### How Often Should I Use Yoga Balls For Back Stretches? For best results, use yoga balls 3-4 times a week. Regular use promotes flexibility, reduces stiffness, and supports spinal health. ## Conclusion Using a yoga ball for back stretches offers gentle support and helps improve flexibility. These exercises can reduce stiffness and ease muscle tension effectively. Tools like the Trideer Yoga Ball or the APEXUP Stability Ball provide a comfortable surface to stretch safely. Massage balls, such as the Kieba or YOGA TUNE UP® sets, help release tight spots and promote relaxation. Regular practice with these tools can strengthen your core and improve posture. This leads to less pain and better movement in daily life. Start slowly and listen to your body to avoid strain. Over time, you will notice increased comfort and ease in your back. Whether for fitness, therapy, or relaxation, yoga ball stretches are a simple way to care for your back at home. Give these stretches a try and enjoy the benefits of a healthier, more flexible back.