Gaiam Yoga Wheel YOGA WHEEL: Handcrafted from a 6mm yoga mat for a premium yoga mat cushion and feel TEXTURED NON-SLIP YOGA MAT SURFACE: Closed-cell design seals out germs, odor and bacteria and the textured non-slip superior cushioning provides for extra control in poses and stretches RELEASE TENSION: Improves flexibility and helps to release back, chest and spine tension DESIGNED TO ASSIST & ENHANCE: Use for core poses such as backbends and other challenging balance poses - great for all yogis, beginners to advanced DIMENSIONS: 5-Inch w x 12-inch diameter / PVC Core with 6mm Yoga Mat surface