Light, soft, and quick to dry, this tee has the performance of a Merino wool blend and the feel of cotton. The active cut fits more like your favorite T-shirt than a piece of technical wear. The seams are moved away from your shoulders for more comfort when carrying a pack. Key Features of the Outdoor Research Essence Duo T-Shirt: Lightweight Dri-release Wool fabric manages moisture, dries quickly 88% polyester/12% Merino wool for superior wicking and a cotton-like feel Built-in FreshGuard odor neutralization Raglan sleeves Avg. Weight (oz./g): 3.8 / 108(size medium)