Yoga Rug - Blue and Purple. These dense, eco-friendly yoga mats are made of pure, organically grown cotton to provide a super absorbent anti-slip surface. An excellent choice for Hot, Bikram or Ashtanga styles, or as alternative to conventional plastic mats. Use by itself, or for extra comfort, place it over an anchor mat for a soft, absorbent surface. Hand loomed in India and colored with all-natural, organic dyes.