Stackable Rectangular Plyo Box SetOur Stackable Rectangular Plyo Box Set is a versatile box stack for athletes to develop explosiveness, increase vertical jumping ability, and for promoting overall leg strength, as well as its use for various conditioning exercises. It features an anti slip design that stacks securely with the use of industrial velcro to decrease the chance of any mishap and provides a landing surface high enough to train max vertical jumps. The anti slip feature is