Premium Power Plyo Boxes have a stable square frame and a large landing area. This heavyweight plyometric box is a solid choice for plyometrics training. Platform is covered with an extra-thick mat and the perimeter is rounded for added safety during exercises. Square tubular steel construction. Tops are reinforced 3/4" plywood covered with 1/8" solid rubber mat. Stackable for convenient storage. Use indoors or outdoors. Black.