Manduka Eco Yoga Kit (5mm thick eKO mat and Natural Cotton MatSak) This kit contains: Manduka 5mm thick eKO mat (Moss) and Natural Cotton MatSak (Cocoa) The Manduka eKO offers something new for eco-conscious yoga practitioners - a yoga mat that is both comfortable and durable, and will decompose completely at the end of its useful life The eKO mat is made from non-Amazon harvested tree rubber and is free of the toxic foaming agents and plasticizers commonly found in yoga mats, such as TPE, POE, and other rubber mats Manduka MatSaks are made of a durable cotton canvas material with recycled PET mesh detailing The MatSak's two zippered compartments provide protective carrying space for a yoga mat, towel, strap, and personal items, such as wallet, keys, and light clothing