IncStores - Tatami Foam Tiles - Extra thick mats perfect for martial arts, MMA, lightweight home gyms, p90x, gymnastics, yoga, cardio, aerobic, and exercises Available in 2 popular reversible colors Two detachable edge pieces allows any tile to be a corner, border or center Backed by a 1 year limited warranty Made from non-recycled, non-toxic, lightweight, and durable high density closed cell EVA foam Foam tiles may fluctuate by color and thickness