ECO-FRIENDLYHIGH QUALITY NON-SLIP POLYMER ENVIRONMENTAL RESIN (Patented PER)!TEXUTRED, THICK CUSHIONED, 1/4"(5mm),WITH PATENTED, ENVIRONMENTALLY FRIENDLY, PER* PLASTIC!*POLYMER ENVIRONMENTAL RESIN HAS SIMILAR NON-SLIP PROPERTIES AS PVC PLASTIC, HOWEVER, DOES NOT EMIT HARMFUL GASES, IS BIODEGRADABLE AND BEST OF ALL, PER IS GOOD FOR THE ENVIRONMENT! NO HEAVY METALS, FORMALDEHYDE OR PHTHALATES USED IN THESE NON-TOXIC YOGA MATS!In doing our part to protect the environment,this Eco-Friendly yoga mat's PER is biodegradable! In addition, this yoga mat isa whopping 1/4"(5mm) thick!COLOR: GREEN SIZE: 24" x 68"THICKNESS: 5.0mm (1/4")