Hotter than the hinges of hell outside? Put on the featherlight, amazingly cool work shirts tested by our Texas Trades Panel and officially rated: cool enough for Texas! "Felt awesome," reported construction COO George. "The ultimate hot weather shirt!" said Jack, who works the oil fields. Our breathable, comfortable, quick-dry Armachillo Shirt is infused with microscopic jade that naturally, amazingly dissipates heat for a cool-to-the-touch feel. And now this shirt is even cooler because we removed the mesh back – more of the cooling fabric can lie directly against your skin. It's the most refreshing way we've found to take the swelter out of summer.