Merino wool is the natural choice for the mountain hunter. From 12 day Sheep hunts to early archery Elk hunts, Merino wool base layers will give you comfort and performance needed to keep pushing in the backcountry. All new for 2018, Sitka's Lightweight Merino wool base layer system takes premium Merino wool, legendary for moisture management and odor control, and wraps it around a nylon core, acheiving the best of both worlds; Merino wool that you can actually depend on to last. Available in Open Country.