On a hot day there’s nothing more uncomfortable than having to wear a t-shirt soaked with sweat. Add a bulletproof vest over it and no amount of air conditioning coming from your car vent is going to keep you cool and dry. CoolCop™ gives you relief! CoolCop™ attaches easily to your air conditioning vent and the soft vinyl vest attachment fits comfortably between your vest and undershirt. Cool air is then delivered under your vest to keep you cool, dry and comfortable.