SHIN PROTECTORS. They can easily be distilled of sweat and gunk with a simple machine wash. NATURE FRIENDLY POLY-COTTON material is a luxurious blend of durability and long lasting perfection. Spanning in length of 8 ft. with a thickness of 0.13 cm and a width of 3.8 cm, a perfect partner for all your yoga, Pilates, daily exercise, or physical therapy needs.