Smartwool Men's Classic All-Season Merino Wool Base Layer — Long Sleeve Shirt (Slim Fit)

Designed for extended durability, this Merino wool long sleeve is exactly what you need to keep temperate all year round. Molding to the contours of the body, this base layer adds a fine line of comfort for all-day use. Crafted with 88% Merino Wool and 12% Nylon, this 4-season base layer is machine washable and imported.

Featuring a slim fit, this base layer is designed to meet the demands of outdoor adventuring, showcasing a slimming silhouette while offering unrestricted movement through the arms and chest. The classic all-season Merino wool blend combines Core Spun Tech for maximized durability with the thermoregulation and moisture-wicking power of Merino wool, making it perfect for 4-season layering and everyday comfort.

Merino wool is thinner and softer than regular wool, easy to wear next to the skin. Each fiber transports sweat away as a vapor, helps cancel out odors, and regulates body temperature to keep you cool in summer and warm in winter. Thoughtful functional features include offset shoulders and flatlock seams to increase comfort and minimize chafing, while the seams also wrap to the front for a body-enhancing fit.

The product line includes Men's Classic Thermal Merino Base Layer Crew, Hike Classic Edition Light Cushion Crew Socks, Women's Classic Thermal Merino Base Layer 1/4 Zip, Women's Classic Thermal Merino Base Layer Bottom, Hike Classic Edition Light Cushion Crew Socks, and Women's Run Zero Cushion Low Ankle Socks. With multiple color options available, these high-performance base layers and socks are designed to keep you comfortable and confident in any season.

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