【HEAVY DUTY CONSTRUCTION】- Plyo boxes are made of steel for maximum strength and durability. Plyometric box is covered by red powder coating, it is durable, rustless, and scratch-proof. 【RIBBED RUBBER PLATFORM】- Non-skid rubber landing surface is designed to help maintain grip on box landings and prevent injury. Your safety will always be our biggest concern. 【3 SIZES PLYO BOXES】- The jump box package includes 12'',18'',24'' in height, allows you to perform numbers of exercise with no need to buy extra Plyo boxes. You may start with lower heights and increase them as you improve. 【SIMPLE INSTALLATION】- You will get our plyometric jump box in parts, but it is very simple to assemble. Just screw them with our necessary accessories and be ready to use it at home or gym. 【EASY STACKING FOR STORAGE】- Tapered design of our box jump platforms is for easy storage. When not in use, just stack these 3 Plyo boxes together and put it in corner. It is also lightweight and easy to move.