When the legendary big-wall climber Hans Florine asked us to build him a shirt he could live in-after his 94th ascent of El Cap-we knew we were up to the challenge. Introducing the nylon-spandex Astroman Shirt. The stretchy woven collared shirt has snaps down the front, tons of stretch and is made of wicking, breathable fabric. Overheating on long, technical climbs just became obsolete. The Astroman Shirt's UPF 50+ sun protection is increased by a snap under the chin-just pop up the Sun Snap Collar and voila, added sun protection for your neck.