Plyo Boxes are made with 1” - 15 gauge welded tubular steel. The landing surface is 3/4” plywood covered with a 1/8” non-skid rubber slip-resistant pad. Legs are constructed at a 6 degree angle to prevent tipping. Available in 5 sizes or in a set of 5 which includes 1 of each size. 12'' Plyo Box has a 13'' top and a 15'' base.