This 3-in-1 Plyo Box is the perfect solution to training all fitness levels. It provides 3 surface heights for plyometric training all in one box. Each side of the solid wood constructions is clearly marked with an arrow and height measurement. No matter which side is up, the corners, edges, and handles are finished to prevent splintering. This product provides tons of variations for your plyometric, strength, and cardio programming needs. Clearly marked with heights on each side: 20", 24" and 30". Assembly required. Hardware included.