The Smartwool Women's Intraknit Thermal Merino Base Layer Crew Shirt is designed to deliver high-performance comfort during your most demanding cold-weather activities. Engineered with advanced 3D-knit construction, it provides a near-custom fit that moves with you for unrestricted mobility. Strategically placed mesh ventilation enhances breathability, keeping you cool when intensity rises while maintaining warmth in key areas. Made with Merino Sport yarns, this top offers the natural benefits of Merino wool combined with the durability of synthetic fibers for long-lasting wear. Whether skiing, climbing, or training outdoors, this base layer keeps you dry, comfortable, and ready for any adventure.