What Our Gearhead(R) Experts Are Saying:"I wear the Astroman Long-Sleeve Sun Shirt on exposed alpine hikes and desert routes. The stretch is amazing, and the new relaxed fit makes it much more breathable. It protects me from the sun without feeling stuffy, and I love the hidden snap front for quick venting on steep climbs."When the sun is high and the miles are long, we turn to the Outdoor Research Astroman Long-Sleeve Sun Shirt. Lightweight and breathable with movement-friendly stretch, this best-selling tech shirt offers UPF 30+ sun protection and a relaxed fit that's ready for the trail, crag, or dusty road trip detour. The updated design features a hidden snap closure for a clean look, a center back hanger loop for drying on the go, and secure pockets to stash maps, snacks, or a trail pass. Made with bluesign(R)-approved recycled materials and built for all-day wear, this shirt works hard so we can focus on the adventure ahead.