Fitness First brings you a multi sized workout dream. The soft plyo boxes come in 4 different sizes including 6, 12, 18 or 24 inch sized box. Made of soft durable padded foam to help protect the safety of the athlete using them. It will protect your knees and joints and shins in case of missing the jump. Stackable and takes up minimum space. Made with a pvc cover to help protect the spread of bacteria and easy to wipe down and clean. Can also be purchased as a set including the 6, 12, 18 and 24 inch boxes.