ZenFlow Premium Eco-Friendly 3/16-Inch Yoga Mat Made With Open-Cell, Natural Rubber Natural Rubber Imported Free from PVC, TPE, synthetic rubber and other nasties Extra long eco-friendly 3/16-inch yoga mat made with open-cell, natural rubber Fabulous slip-resistance even with perspiration on the mat Two-sided feature - find your balance of grip and cushion Sleek looks, superb cushioning and resilience