About this item Purpose built for Plyometric Exercise.The Ultra Fitness Gear Garage Wood Plyo Box features 3 different height options for training flexibility: can be used at 20, 24, and 30 inch heights. Develop strength through your jump training, dips, step-ups, and box push-ups What makes us different? Pre-drilled holes are countersunk deeper so you can’t snag yourself on a screw. Routed radius corners and smooth surfaces to prevent splinters. Larger handle openings designed to be picked up from any direction. Designed to Keep Up with Your Progress. With the 3 in 1 Plyo Box, you can adjust your height as you increase your training intensity. Train as hard and as often as you can. Durable and Strong. Plyo Box is made of high-grade 3/4 inch plywood. Fits together like a puzzle, our larger sizes have internal bracing. How much weight can it hold? We haven’t found the limits, but we’ve tested our boxes up to 450 lbs.