The Marmot Men's ThermalClime Pro Long Sleeve Crew is as reliable as your ice climbing partner. The bi component knit construction combines larger yarn fibers that pull sweat away from the skin and smaller fibers that rapidly spread sweat to dry fast. The result is a midweight layer with warmth and highly efficient moisture management. An athletic fit, added stretch and flat locked seams ensure reliable moving comfort. Constructed of 50% polyester, 50% recycled polyester mesh Polartec Power Dry Marmot UpCycle with recycled polyester Quick drying and moisture wicking stretch without hydrophyllic water loving elastane Flat locked seams for added comfort Tag free neckline Athletic fit Avg. weight: 6.2 oz. Avg. length: 29.5 in. Import.