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. Keep little ones warm with this midweight base layer set. The 150 GSM double-layer fabric traps air for insulation without added bulk. Acclimate Dry+ technology wicks moisture, and odor-blocking properties keep toddlers fresh. A relaxed fit ensures comfort, making layering easy. | Mountain Tek Kids' Performance Base Layer Set