Yogee Classic- Extra Thick (1/4") & Long (72") Eco-friendly Slip Resistant Yoga Mats in Five Aesthetic Colors PER (Polymer Environmental Resin) Extra-thick , Phthalate-Free, Eco-Friendly Yogee mats, Available in Five Aesthetic Colors Superior Cushioning for Impact Absorption Transition from Hot to Traditional Yoga with its non-skid PER surface Stable, Softer surface for your workouts, Good for all types of Yoga, Pilates & Aerobic exercises Free of toxic dioxins, furan, phenol, or heavy metals, SGS approved