22L Blue color called Moonlit Strap on the Arc'teryx Arro 22 Backpack in Nocturne is an urban commuter style backpack with WaterTight® construction. This backpack features WaterTight® zippers and a tough Armourlite™ kangaroo pocket to repel weather and keep contents safe. The advanced materials and distinctive design of the Arc'teryx Arro 22 Backpack make it both sleek and functional. A great backpack for anyone with a busy lifestyle that needs a versatile bag to get them through the day. Weight: 1.1 kg / 39 oz Storage Capacity: 22 L Construction: Padded bottom, Top grab handle WaterTight™ external zippers Pockets: Kangaroo pocket, Two external pockets, Fits 15" laptop Hydration: bladder sleeve, Hose clip Suspension: Dual-density straps, webbing hipbelt, Thermoformed backpanel Key clip attachment available Materials: 1260D Invista Ballistic Superpack nylon, Armourlite™, Hypalon™ Purchased 2 months ago. Used once for a trip. Worked great but overall I want to upgrade to something bigger.