Truthfully, I would not purchase anything other than this Lifeline plyo box. The density of the foam is what makes it. I work in an instructional institution with athletes of all levels. The height options are great and well understood which way to position the cube. The covering is easy to clean and fits the cube well, therefore no gaps, creases, etc. I purchased another cube at half the cost and sent it back….it was too light and could flip/move easily while in use. This places the athlete in potential danger. You will have to flip it end over end to move it from point A to B, or get two strong athletes to help you move it, but this is what I LOVE about it! Pick the best. Pick what will withstand years of use. Choose the plyo box that gives you what you pay for! No regrets at all. I have one and will be purchasing another two as soon as they get back in stock. [...]