Air-cooled clothing on the market does not operate by actually cooling down the air, as a room AC unit does. Instead, it increases the natural body cooling of the wearer by blowing air and sometimes water vapor around the body, decreasing skin temperature by the evaporation of sweat and vapor.
Unlike traditional air conditioners that cool the surrounding air, air-cooled clothing works by increasing the body's natural cooling mechanism. It does this by circulating air around the wearer, often with added moisture to promote sweat evaporation and lower skin temperature.