The Smartwool Men's Merino Short Sleeve Tee delivers year-round performance with a slim fit and durability to match your most rugged adventures. Built with Core Spun technology, this tee wraps soft, responsibly sourced Merino wool around a recycled nylon core, offering the comfort you love with added strength. Designed to reduce chafing with flatlock seams and built to layer comfortably under a pack, this tee is an everyday essential for travel, hiking, or simply staying active outdoors. Size up if you prefer a more relaxed fit Fit: Slim Lightweight Merino jersey with recycled nylon core for added durability 100% Merino wool next to skin for softness and breathability Flatlock seam construction minimizes chafing Material: 88% Merino Wool, 12% Nylon Care Instructions: Machine wash warm gentle cycle, wash with like colors, tumble dry low, cool iron as needed, do not iron decorations