Perfect tool for jumps and plyometric drills. Promotes overall explosiveness necessary for most sports. Constructed of resilient polyethylene with bottom rubber stoppers. Tapered design permits better stability. Select an available size. Jet black. Use the Jfit Plyo Jump Training Box to improve your speed, jump height, and body strength. This training box is crafted from solid steel with a sturdy tapered design. It also features a non-slip landing pad and rubber bottom stoppers to keep you and it firmly in place. Choose from available sizes to suit your training needs.Dimensions:Small: 14W x 14D x 12H in.Medium: 18W x 18D x 18H in.Large: 20W x 20D x 20H in.Extra-Large: 24W x 24D x 30H in. Size: 24.