A staple for any climber&';s wardrobe, this long-sleeve is made with a breathable heavyweight cotton fabric for long-lasting comfort and durability. Its relaxed fit has extra room under the arms to ensure you have plenty of reach while you climb. Features & Specs Technical features Breathable Durable Construction Heavyweight combed cotton jersey is naturally strong, comfortable, and breathable Design & Fit Relaxed fit for comfort and easy layering Neckline configuration Ribbed neckband for stretch and comfort Patterning Gusseted underarms for mobility and comfort Sustainability PFAS (Per- and polyfluoroalkyl substances) Compliant Size XS, S, M, L, XL, XXL Weight 375g / 13.2 oz Fit Relaxed Activity Rock/Boulder/Hike Model X000009714