88% Wool-Merino, 12% Recycled Nylon Imported YEAR-ROUND PERFORMANCE AND COMFORT: Designed for all-season versatility, the Smartwool Classic All-Season Merino Base Layer Crew delivers exceptional performance in any climate. Whether facing cold winter chills or warm summer days, this temperature-regulating base layer ensures optimal comfort by keeping you warm when it’s cold and cool when it’s hot. ERGONOMIC DESIGN FOR FREEDOM OF MOVEMENT: Designed with active lifestyles in mind, this base layer features raglan sleeves, allowing a full range of motion while eliminating shoulder seam pressure for chafe-free comfort. The side seams wrap to the front, providing a sleek, contoured fit that moves with your body. Whether you're hiking, skiing, or lounging, the Merrow stretch stitching offers exceptional flexibility, ensuring a second-skin feel without restricting movement. ULTRA-SOFT MERINO WOOL FOR NEXT-TO-SKIN COMFORT: Experience the luxurious softness of Merino wool, a fabric known for its incredible breathability and natural moisture-wicking properties. This base layer is crafted from 88% Merino wool, offering next-to-skin comfort without the itch. The lightweight yet durable construction makes it ideal for layering under jackets, vests, or sweaters, ensuring long-lasting coziness without bulk. MOISTURE-WICKING AND ODOR CONTROL TECHNOLOGY: Stay dry and fresh all day with Merino wool’s natural moisture-wicking abilities. This fabric efficiently draws sweat away from the skin, preventing dampness and discomfort during intense activities. Plus, Merino wool’s odor-resistant properties keep you feeling clean and confident, even after long hours of wear. SUSTAINABLY MADE FOR LONG-LASTING WEAR: Built for durability and sustainability, this base layer blends Merino wool with 12% recycled nylon, offering enhanced strength and longevity. The addition of recycled fibers ensures that this piece is both eco-friendly and high-performing, making it a responsible choice for environmentally-conscious adventurers. Easy to care for and machine washable, it retains its shape, softness, and function wear after wear.