GoYonder Large Yoga Foam Wedge Knee Pad Cushion,Slant Board, Calf Stretcher for Women,Exercise Back Support, Foot-Rest Cushion for Under Desk Non-toxic strengthened EVA material Multi-use: can be used to add support and length for many postures Non-slip scratch-proof dense surface Lightweight and easy to clean and carry Diameter: 2" x 5" x 20"; weight: 7.4 oz