1 jump box, 3 heights for a variety of training options! The height can be adjusted by flipping the box to suit various activities and users! The numbers on the color panel allow the user to immediately recognize the height of the box and inspire students to jump to the next level! The upward arrow on the side indicates the height of the jump box. The high density of internal foam and a firm outer skin make the jumper durable enough to withstand daily use, while the material is also soft enough to prevent knee and calf injuries during jumping. The three bottom edges are covered with non-slip material to increase stability and safety during jumps.