An excellent 4X4 Tumbling Mat . Multi-color 1-1/2:in. specially formulated poly foam. Double folded seams and hems. Hook n' loop at both ends fasten mats together. Light, portable mat with sewn 1 foot and 2 foot panels that fold every 2 feet. All heavy duty 14 oz. vinyl-coated nylon covers meet California specs for flame reatardancy.