If you are looking for a yoga mat that's entirely eco-friendly and also a high performer, Manduka's heavy duty eKO Yoga Mat is the perfect mat for you. Made entirely out of natural, sustainable, renewable, decomposable tree rubber, with a latex-free, non-allergenic manufacturing process. Closed cell surface won't absorb moisture like a sponge (we're looking at you, PVC!). Instead, a textured, nonstick surface keeps feet and hands rooted into the earth, so you stay put and your mat stays fresh. Manduka's eKO is arguably the greenest yoga mat on the market!