Made from high-quality wooden plyo boards for increased longevity. Two surfaces with holes created on it for easy portability. There are internal bracing locks at the box’s eages for solid construction. Flat, non-slip surface which will help in jumping with full force. BUILT TO LAST: Made of high-quality plywood with puzzle joints, Wooden Plyo Box is durable and can hold up to 450lbs. 3 IN 1: Uniquely designed with 3 different heights allows you to control the level of difficulty in plyometric exercises.PRO-DUTY WOOD CONSTRUCTION: Goes with internal bracing (on 3 largest sizes) for maximum strength for a non-slip surface on the top and to support heavy-weight athletes, HIIT, MMA. EASY ASSEMBLY: Pre-drilled holes make the plyometric box easy and quick to assemble. SAFE AND CONVENIENT: Rounded corners won't hurt you during jump box exercise; The large opening handle makes it easy to move the box.