Baseleyers regulate your temperature and ensure supreme comfort on a variety of expeditions. The most lightweight baselayers wick sweat away from your skin and block the sun's pounding UV rays to keep you comfy in sunny and warm weather. Heavier options insulate remarkably and keep you warm in the most freezing temperatures. Baselayers come in many traditional fabrics, such as silk, cotton and Merino wool. These options remain exceedingly breathable and distribute optimized amounts of insulation for a range of weather conditions. Modern synthetic fabrics provide plenteous benefits, such as the ability to stretch and move with your body, a soft feel against your skin and odor prevention with antimicrobial properties. They are fitted enough to layer under tailored pants, as well as loose snowboarding pants. Unexcelled men's baselayer brands include 2XU, CWX, Arcteryx, Armada, Smarth Wool, Burton Snowboards, Dakine, Homeschool, Patagonia, Hot Chillys, Icebreaker, Marmot and Naklin.