These boxes are a must-have training tool for explosive jump and speed training, and a variety of plyometric drills! Made of welded tubular steel, this plyo box feature a slip-resistant, rubber-coated plywood landing surface, and the legs are constructed at an angle for extra stability. • Made of 1" 15-gauge welded tubular steel. • Landing surface is 0.75" plywood covered with 0.12" non-skid rubber slip resistant pad. • Legs are constructed at a six-degree angle to prevent tipping. • A must-have training tool for explosive jump and speed training, and a variety of plyometric drills. Champion Sports Plyo Boxes are a must-have training tool for explosive jump and speed training, and a variety of plyometric drills! Made of welded tubular steel, this plyo box feature a slip-resistant, rubber-coated plywood landing surface, and the legs are constructed at an angle for extra stability. 15" X 15" Top, 24" h. Length: 21"; Width: 21"; Material(s): Plywood; Rubber; Steel; Playground/Gymnasium Sets Type: Plyo Box.