Stay warm without the bulk with these 509 FZN Merino base layer pants! The Level 2 midweight warmth is perfect for cold weather activities without making you overheat. What makes these special is the Alpine Merino wool blend - 250 GSM 20 micron wool combined with 40% bamboo viscose and 10% nylon for structure and durability. Unlike old-school wool that can be itchy, this blend feels soft against your skin while providing all the natural benefits of wool. The material is naturally breathable, fast-drying, and odor-repellent, meaning you can wear them for multiple days on camping or hunting trips without offending your tent mates. The fit is designed for active use, providing warmth without restricting movement whether you're skiing, snowboarding, hiking, or just dealing with cold winter days. The black color works well under any outer layer, and the quality construction means these will last through seasons of use. Compared to synthetic base layers, the wool blend does a better job of regulating temperature and managing moisture - you stay warm when it's cold but don't get sweaty when you're active. They're perfect for winter sports, cold weather work, or just as cozy thermal underwear for everyday wear. The FZN stands for Five Zero Nine (not frozen), and that's exactly how you'll feel - comfortably warm, not stiff and frozen like in inadequate layers.
Free 30-day returns 
Free 30-day returns
