Be more comfortable than the rest of your friends on your next big hike in cold weather with the Kuhl Men's Long-Sleeve Alloy Shirt on your back. We mean, it's not a competition, but the moisture-wicking, stretchy polyester fabric brings you lightweight, breathable warmth that's impossible to ignore on colder days, while the DYNAMIK stitching delivers more stretch and strength than traditional seams for easy layering and chafe-free performance. Then, a five-panel sleeve design enhances your range of motion when the days activity goes from hiking to climbing, and integrated thumbholes lock down your fit for easy layering and added protection against wind. Plus, Kuhl reinforced the panels at your shoulders for resilient durability under heavy packs.