Multi-size ply box, with a dovetail design and centre support panel, make our boxes extremely tough and durable. With three sizes in one 20, 24 and 30 inch these boxes are perfect for any box, gym or garage retreat. Please note boxes come flat packed. Specifications: Product Use: Functional Fitness, Conditioning, Plyometric training, Bootcamps Size: 20, 24 and 30 inch Material: 18 mm birch plywood Support: Dovetail design with centre support panel Weight: 24 kg Multi-size ply box, with a dovetail design and centre support panel, make our boxes extremely tough and durable. SPECIFICATION: Brand UKSF Usage Home Use, Commercial Use Condition Brand New Warranty 12 Month Warranty