Crafted with our Thermotech Technology, Mountain Tek is built from passion and expertise to outfit your cold-weather adventures. Our high-quality, affordable basics keep you warm and comfortable, so your snowy escapes are about making memories, not battling the cold. Whether it's your first trip to the mountains or a family tradition, trust Mountain Tek for top-quality base layers designed for peak performance. The Mountain Tek Men's Performance Merino Base Layer Top offers a breathable, midweight base layer with Merino wool, Acclimate Dry fibers, and spandex. This blend provides warmth, comfort, and four-way stretch for easy movement. Merino wool traps heat, while Acclimate Dry fibers wick moisture to keep you dry. With odor-blocking tech and a relaxed fit for layering, it's perfect for skiing, snowshoeing, or post-adventure lounging. Stay warm, dry, and comfortable wherever your day takes you.