10 Height Combinations, Up to 60" / 150cm Max Height! With 4 Foam Plyo Boxes included in this set, you'll be able to have a huge range of heights including 6" / 12" / 18" / 24" / 30" / 36" / 42" / 48" / 54" / 60" by stacking and alternating different combinations. For all serious trainers, combine all 4 boxes to achieve a maximum height of 150cm. Durable PVC Layer The Plyobox foam is wrapped in heavy duty PVC, to withstand extensive usage and ensure it lasts. The Safer Way Our Plyo Boxes are made out of High Density EVA foam that is soft enough to minimize the risk of tripping and falling, while providing enough density to make it feel like you're not jumping on a sponge. Connect & Secure Stacks with Velcro Using Velcro, you can safely and securely stack each box Plyo Box together so they won't break apart during jumps. Each box comes with a low profile handle for easy handling and movement. Technical Specifications General Materials Heavy Duty PVC EPE Foam Set includes 15cm / 6" Soft Plyo Box - 4.5kg 30cm / 12" Soft Plyo Box - 6.5kg 45cm / 18" Soft Plyo Box - 8.5kg 60cm / 24" Soft Plyo Box - 11kg Assembled Dimensions (Full Stack) 90cm x 75cm x 150cm (L x W x H) Gross Weight 33kg Warranty Information This product is covered by the following warranty/warranties: · 12 Months Parts replacement warranty *Please read our Warranty Terms & Conditions by clicking here