You'll want to live in this men's nylon Expedition shirt from Outdoor Life. It has just what you need to keep you cool and comfortable when you're out and about. The back features a mesh panel covered with a Velcro flap to keep you cool and dry. You can roll up the button-tab long sleeves if the day turns warm -- and there's even a zippered slot pocket in front for your phone or media player. A Velcro strap above the pocket keeps your headphone cord in place.