When attached to a Wavemaster, or any other heavy bag, the Uppercut bag becomes the ultimate tool for developing the perfect uppercut technique. The unique two layer design offers an impact absorbing dense foam core and a durable no-slip outer covering to provide you with a safe, long lasting product. Made with thick nylon web straps and a quick-release buckle the Uppercut Bag is designed to quickly and easily be installed and removed on virtually any heavy bag. A great tool for either the home or gym. For use with the Wavemaster, Wavemaster XXL, Kid Kick Wavemaster, and the TKD Wavemaster.