GreEco Yoga Wheel Pilates Roller- Extra Strength Prop in Yoga Backbends & Poses, Back Opener, Relieve Back Aches, 13" x 5", New Black x Green GreEco yoga wheel is excellent for opening your entire back, hip flexors, chest, and shoulders, make back bending accessible, develop back strength, relax muscles, etc. It also helps enhance and improve balance, flexibility and breath control. Lightweight & Portable -- GreEco Yoga Wheel is 13" diameter by 5" height, which easily fits in your gym bag or carry-on luggage. Comfortable & Stable -- Soft TPE material padding cushions & non-slip surface, supply extra comforatable & stable. Durable & Safe -- Specialty injection molding process, & ABS inner tube core is designed to withstand constant, heavy, and repeated use without breaking down. It retains the shape & much firmer than a typical foam roller (which tends to soften and lose shape with use). It is not just a tool to enhance your yoga experience, it is a way of life -- Learning to stretch further, reach higher, and dig a little deeper.