Imprint Comfort Mat, 20 by 36-Inch, Mocha/Taupe Top Consumer Rated Comfort Mat - Up to 60% thicker than other mats! Environmentally friendly, non-toxic & phthalate free, Safe for children and pets University tested and proven by the Center for Ergonomics to reduce overall fatigue and discomfort by up to 60% No-curl edges and stay-flat memory ensure Imprint Mats won't curl like other mats Lifetime 100% satisfaction guarantee! If you don't love your new Imprint Comfort Mat exchange or return it without question, whenever Tested and certified by the National Floor Safety Institute & an American Chiropractic Association (ACA) Partner