Harnessing FlashDry and moisture-managing DotKnit technology, the The North Face Summit Pro 120 Tight delivers lightweight comfort and warmth during high-output alpine activities.FlashDry fabrics are engineered to wick moisture away from your skin helping to keep you dry, cool and comfortable. The DotKnit technology offers both lightweight warmth and exceptional moisture management by using a targeted yarn construction. Engineered holes in the face fabric accelerate moisture transfer. It's comfortable on the skin and strong because of the merrow stitching. Features a wide waistband with encased-mesh elastic for comfort and secure fit.