Natural Jute and PER Yoga Mat [2] This Eco-Friendly Yoga mat's unique look and feel are created by meshing natural jute fibers with patented PER (Polymer Environmental Resin), which is phthalate-free and safer for workers during manufacturing. The result is a mat that looks distinctive and lets you feel better about your ecological footprint — yet doesn't compromise on the grippy, cushiony texture you count on for your yoga practice. It's 68" x 24" and1/8" thick. $39.00.