The Thermotech Men's Extreme 2 Technical Base Layer Crew Top offers the pinnacle of performance base layer technology. Now featuring shoulder seams that are rolled slightly forward for comfort under pack straps. Thermotech Extreme2 combines thermal and moisture management technologies with antibacterial protection to provide the ultimate in comfort and performance. Designed with the outdoor enthusiast in mind, Thermotech Extreme2 is the premier cold weather base layer garment. The garment construction and fibers allow for the rapid transmission of moisture from the skin through the fabric. Once through the fabric, this design provides a quick evaporation rate keeping you drier and warmer. The 4-way stretch construction fits next to skin, providing maximum mobility and comfort during high intensity activities. This close fit provides exceptional warmth retention while expediting moisture transfer. The baselayer fabric contains antimicrobial protection, providing long lasting freshness by reducing odors and inhibiting the growth of bacteria. Thermotech Extreme2 always keeps its shape and remains soft after every wash.