Lifespan 3 in 1 Foam Plyo BoxThe 3 in 1 Foam Plyo Box is meant to allow gym goers to facilitate a dynamic step aerobics exercise. These boxes are both durable and comfortable to use. Durable PVC Layer The Plyobox foam is wrapped in heavy duty PVC, to withstand extensive usage and ensure it lasts. Easy to Flip The Cortex Plyobox is easy to flip whilst maintaining a moderate weight to ensure sturdiness. Clearly Labelled Featuring colour coded and clearly labelled sections, the