The Mizuno Runbird is a catcher's knee wedge that offers cushioning and support during practice to help reduce the discomfort from prolonged squatting. The memory foam and pre-curved padding help reduce the strain on the knee joint by providing a cushioned and stable base for the knee to help maintain a catcher's stance. This catcher knee support helps provide better alignment helping to prevent injuries over time or help rehabilitate after a knee or back injury. There are multiple strap channels on the Mizuno Runbird catcher knee saver for a customized fit for players of all ages and sizes.