The Kryptek Men's Arma Tech 1/2 Zip is a high-performance base layer built for demanding conditions and dynamic environments. It's part of Kryptek's premier Altitude Collection, designed for active movement and thermal regulation. This layer combines next-to-skin comfort with technical mobility in cold-weather or high-elevation missions. Whether you're glassing ridgelines, hiking steep slopes, or stalking game, this piece keeps your core in check. It regulates body heat and wicks moisture to keep you warm, dry, and ready for action. Made from a 91% polyester and 9% Merino wool blend, it delivers durability, stretch, and performance. The synthetic exterior pulls moisture away and dries quickly during intense movement or long hikes. The Merino backer offers soft touch, thermal regulation, and comfort in a wide range of conditions. Worn next to the skin, this layer manages sweat and body heat efficiently. Its smooth finish adds comfort and strength while minimizing friction under outer...