When the cold comes knocking, keep it at bay with our Extreme Warmth Base Layer Bottoms. Made with our high-performing AlpacaTek Technology®, these leggings are sure to be the warmest base layer in your closet with unparalleled warmth but no excessive bulk. They’re made with our patented Alpaca Dry Fusion Technology® for ultimate moisture-wicking abilities (85% better than Merino wool) and antimicrobial properties. Hollow-fibered alpaca fleece maintains high-level thermal capabilities, while a multi-flex knit provides ultimate comfort and range of motion thanks to twelve stretch panels in the upper glutes, thighs, knees, calves, and ankles. Additionally, tapered ankles prevent material from bunching up, even when paired with a heavy sock. Try these on and discover why alpacas—and now you—can survive in some of the harshest conditions in North America. Wear them to hunting camp, on a hut-skiing trip, or downhill skiing to keep you warm all day and all night.