Train hard, and slay harder wearing the Arc'teryx Lana Merino Wool Crew Short Sleeve. Made using moisture-wicking, breathable, and lightweight fabric, this tee features crew neckline, short sleeves, regular fit that provides freedom of movement, and Articulated patterning for unrestricted mobility. Betaspun technology combines fibers to create a light, soft, more durable yarn that regulates temperature and elevates resistance to abrasion and pilling. Plant-derived TENCEL fibers provide exceptional softness and breathability. Dynamically placed shoulder seams improve freedom of movement and are comfortable under pack straps, and nylon fibers add durability. Merino yarns meet the RWS (Responsible Wool Standard) and are sourced from humanely raised, non-mulesed sheep. PFAS (Per- and polyfluoroalkyl substances) Compliant. 100% Merino wool. Machine washable.