We’ve taken the same technology used in our popular TriplePlyo and created the PLYOSTACK. This plyo box set can be interlocked together with velcro to provide 15 different height combinations. The dense foam provides a heavy base and the softer outer foam provides a safe padded surface to jump on, allowing you to push yourself to new heights without fear of injuring your shin. With a combined weight of over 190 lbs, these stackable plyo boxes are as stable as they come. The high visibility markings make it easy to know what height you are jumping to. Each 28″ x 28″ box includes unique grabber material making your feet stick on every landing. Comprised of heavy duty UV stabilized mildew-resistant vinyl, attention grabbing graphics, and made in the USA, the PLYOSTACK is built to last.