These plyometric boxes provide maximum stability and durability with their steel construction and fully welded frames. Athletes can use these boxes for forward jumps, lateral jumps, and other plyometric drills. Available in multiple heights for developing reaction time and overall explosiveness. Square tubular steel construction. Tops are reinforced 3/4" plywood with nonslip surface. Rubber bottoms protect floor. Stackable for easy storage. Use indoors or outdoors. Red/Black. 5-year limited warranty. Includes: 1x36"