Injection molded one-piece construction Lightweight construction adds little weight to your RIGID TQ Case Quick installation Prevents premature wear on duty uniforms Comes with all necessary hardware The Eleven 10 RIGID TQ Case Shirt Shield for C-A-T is an optional accessory that when installed, creates a barrier between your body, shirt, and the exposed portion of your tourniquet. A great way to prevent premature wear on duty uniforms, preventing any rub marks or fraying that may occur with duty gear worn snug to the body. Installs quickly and comes with necessary hardware.