The KUHL ALLOY SWEATER features soft, lightweight sweater-knit fabric with great breathability, wicking properties and UPF 15. The fabric has a touch of stretch for comfort. Sewn with DYNAMIK stitching for more stretch and strength than traditional flatlock, low bulk seams make layering comfortable and easy. KUHL's articulated 5-panel sleeves provide better range of motion. The ALLOY SWEATER features KUHL's signature thumb loops to lock out the cold, an 11-inch reverse coil zipper with draft flap and chin guard, and an interior locker loop for storage.