PlyoStack™ 6" - 24" Foam Plyo BoxA plyobox system of stackable units that interlock with Velcro to create 15 different height options from 6 72 inches Features: Box lengths and widths 28 inches with heights of 6, 12, 20 and 24 inches Combined weight of 190 lbs. ensures stability for jumping and stepping Dense inner foam provides a heavy base, and a softer outer foam safely cushions the landing and protects shins Outer covering is heavy duty commercial grade vinyl Unique grabber