BalanceFrom Fitness 144 Sq Ft Interlocking EVA Foam Exercise Mat Tiles, GrayWorking out is already enough of a challenge without having to do it on a hard, cold floor. With the 144 Square Foot Interlocking EVA Foam Exercise Tiles from BalanceFrom Fitness, you get a large area of thick padding so you can complete your set of crunches without unnecessary pain. Made from high density EVA foam, this 1 2 inch thick floor mat comfortably cushions your spine, hips, knees, and elbows on hard floors. The double sided non stick