This lightweight long sleeved shirt combines two technical textiles to provide extra protection while delivering outstanding breathability and drying time. The breathable main body of the Ether Comp Crew utilizes a quick drying and cool feeling textile for on the trail comfort. Lightweight and tough EnduraflexTM stretch woven fabric reinforces the arms and shoulders, increasing abrasion resistance while hiking or trekking. Features: Moisture wicking Breathable Lightweight Durable Composite construction Stretchy fabric provides freedom of movement Flatlocked seams lie flat for added comfort Gusseted underarms Crew neck Long sleeves Reinforced shoulders and arms UPF Rating 50 Athletic Fit, Hip Length Weight: 175 g 6.2 oz Activity: Rock Climbing Hiking Trekking Materials: EnduraflexTM 85% polyester, 15% elastane, 168 gm . A four way stretch twill fabric. Hydrophobic, cool, and smooth against the skin. HeliusTM 100% polyester 112 gm . A lightweight, breathable, stretchy, plain knit textile with a moisture wicking finish to promote evaporation.