Multi-color 1 1/2" specially formulated poly foam, designed for exploratory gymnastics or discovery play for preschoolers and toddlers. Double folded seams and hems. Hook-and-loop at both ends fasten mats together as tumbling strips. 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 retardancy. 4' x 4' no handles.