With a stable square frame and a large landing area, this heavyweight plyo box is a solid choice for plyometric training for athletes of all sizes and abilities. The platform is covered with an extra-thick mat and the perimeter is rounded for added safety.Square tubular steel construction. Tops are reinforced 3/4" plywood covered with 1/8" solid rubber mat. Stackable. Use indoors or outdoors. Black. Additional shipping charges will apply. 5-year limited warranty.