NASA Spinoff Dress Shirt Project at Kickstarter

"Using the same technology that NASA uses in space suits, our proprietary blend of fibers, "Apollo" will literally control your body temperature. Imagine you're outside on a hot day. Apollo uses Phase-change Materials (PCMs) to pull heat away from your body and actually store it in the shirt - like a battery. This way, when you get back into your AC'ed office, the shirt will release the heat back to you and keep your skin at the temperature it should be at. The difference is noticeable, and can change your day. Ministry of Supply is literally bringing this technology down from space." More at Kickstarter