Plyo Box, 15" x 15", Plywood/Rubber/Steel, Red/Black 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.