With the 3-in-1 feature, you can easily switch between 3 heights by simply rotating it to 20 inches, 24 inches, or 30 inches, allowing you to customize your workout and challenge yourself at different levels.Security is a top priority, and that's why this box is designed with a durable foam material. You can jump with confidence, knowing that the foam construction provides a cushioned landing surface and reduces the risk of injuries. Additionally, the anti-slip surface ensures stability during your workout. Say goodbye to slips and slides as you focus on your jumps, thanks to the slip-free design that offers a secure grip with every set. This 16-pound exercise equipment is everything you need for your fitness journey.