X Training Equipment 3 in 1 Plyometric Jump Box - Great for Crossfit Plyo Box Workouts Adjustable to 30", 24", and 20" heights by simply rotating the plyo box Made from 3/4 inch cabinet Grade A plywood Rounded corners for safety and internal bracing for strength and stability during step up and jumping exercise Cut-out side handles for easy transport Assembles in minutes with supplied hardware and tools