Combat Application Tourniquet (C-A-T) The Combat Application Tournquet (C-A-T) is a proven tried and true tourniquet which should be a part of every medical kit designd to combat bleeding wounds. The C-A-T excels in single handed use when compared to altnertives and is both lightweight and compact. The durable windlass system is constructed with a polymer handle which helps reduce weight, and tightens down the patented free-moving internal band. This free moving band applies true curcumferntial pressure to the extremity. AR500 Armor always recommends proper training and proficiency with your gear and all equipment you choose to use.