Butch is a cocksheath with a built-in COCKSLING-2 attached at the base. The sling keeps this firmly melded to your body no need to worry about it slipping and sliding. Each BUTCH cocksheath comes with a fitted bullet insert designed to help you customize the fit and feel. The blubbery insert is designed to "lock" into the inner chamber, letting you adjust the tightness of the inner length on your shaft.