The Cierzo 28 is an ultralight, streamlined pack designed for summit assaults and single day climbing trips, with a feature set that expands its versatility. Made from N210p-HT nylon 6,6 high-density plain weave fabric, the Cierzo is light and tough. The special blended high tenacity nylon weave increases durability and tear resistance, and has a DWR finish and polyurethane coating for weather resistance. The material’s light weight is one of the key ways Arc’teryx designers kept the Cierzo 28’s weight to a mere 545 grams (19.2 oz). Chalky inside from climbing use at gym and crag, otherwise no stains. No rips / tears. Good condition. Please reference photos.