Engineered to be the quickest and safest Level II holster in the world, the 5.11 thumbdrive holster was created in partnership with blade-tec and field tested by viking tactics. With Tactical proprietary single-thumb retention and release system, the thumbdrive holster gives you a safe and natural release, while the removable chopblock switch guard provides added weapon retention characteristics. The thumbdrive holster system allows completely user-defined placement and draw angles, and Tactical optional drop/offset and thigh rig kits (sold separately) allow additional customization for maximum comfort, speed, and safety. Material: Nylon.