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