YogaRat’s SGS-certified RAT MAT CLASSIC mats are made from a durable, clean PVC foam material without the use of toxic plasticizers or phthalates. Other mats of similar material construction have been called PER mats, Non-P mats and Clean PVC mats. The printing ink used to give our mats their distinct styles is also nontoxic. All our mats are manufactured in Taiwan, where the highest-quality, most environmentally conscious factories producing yoga mats are located. At YogaRat we take pride in offering premium yoga products without the premium prices and we strive for maximum eco-friendliness in all our products, processes and packaging. Don’t forget to check out our 100% microfiber Yoga Towels, Hot Yoga Towels, SportLite Towels, Yoga Bags, Mat Sling and the new RatPad on Amazon by clicking the “YogaRat” link at the top of the page. Namaste.