We’ve heard of water-cooled computers in the past, but isn’t a water-cooled shirt just a synonym for a wet shirt? Apparently not with the Cool Shirt. This nifty piece of clothing circulates 45 to 60 degree water around the pipes without having you get wet. Should you decide to have it runn water from an ice water cooler in the car, it will be able to keep you cool for up to three hours! Perfect for those driving through the unforgiving desert and need some respite from the sweltering heat around. Perfect for a day out at the beach, I say.