Description of Arcteryx Mistral 16 Messenger Bag This mid-volume shoulder bag features our convenient RollTop closure system, allowing fast and unobstructed access to the main compartment. Perfect as a commuter or travel bag, it comfortably carries a 15” laptop and textbooks or work files; or use it as a gym/bouldering bag. Loaded with pockets inside and out for optimal organization. Features: RollTop™ closure Padded adjustable shoulder strap Thermoformed backpanel Removable webbing hipbelt Padded harness wings with two zippered cell/PDA/MP3 pockets Top stuff-pouch with internal security pocket Front pocket with organization slots and key clip Internal security pocket Internal laptop sleeve (fits 17 inch laptop) Internal sleeve pocket Fits a standard 15 inch laptop Anodized aluminum adjustment buckles Padded bottom and sides Supportive framesheet Embroidered logo 1260D Invista Ballistic Superpack nylon 210D plain weave nylon 630D Invista HT Superpack nylon Spacermesh Stretch-woven fabric (backpanel) Size: One Size Weight : 1.1 kg Volume : 16 L