A versatile lightweight tech tee that provides comfort, breathability and odor-resistance for four seasons worth of adventure. Tee features moisture-wicking, no-itch 100% merino wool for all-natural performance. A good base layer, the soft merino fibers regulate body temperature in all weather conditions and resist odors. 100% Merino Wool. Size M ***Although it is technically a medium, it runs a bit small! NEW WITH TAGS!