On those incinerator-hot days when breathing feels like you’re inhaling fire, defeating overheating is as easy as pulling on an Armachillo® Shirt. Microscopic jade in the fabric produces a cooling sensation unlike any you've experienced – actually lowers skin temperature! Plus the smooth polyester/nylon knit wicks moisture, dries quickly, even has an odor-fighting finish so neighboring noses won’t be assaulted by stink. Now with a sleek pocket with pen sleeve, so you can whip out your shades and pencil with speedy ease.