Timbuk2 Spire Backpack 2.0. The bag is approximately three years old and shows very few signs of wear. Front exterior and bottom are water-resistant. This bag is made to last. Normal amount of fraying on bottle pouch (pictured). Lots of storage. Front pocket with additional internal zipper pocket and tons of organizational space for pens, notepads, chapstick, sunglasses, or whatever else you might need to carry. Zipper on side of bag grants direct access to the separate laptop compartment. Additional weather-resistant zipper pocket under flap. Plenty of space inside main compartment for both laptop and other items (dimensions below). Perforated and padded mesh on back panel and shoulder straps. Chest strap for equal weight dispersion. Daisy chain on front panel can attach a bike lock, carabiners, and/or cycling lights. Laptop pouch fits most 15” and 17” laptops. I carried a 13” Macbook air inside a Timbuk2 laptop sleeve and had plenty of space left over. Dimensions: Total Volume: 23 liters Weight: 2 lb Width: 12.2 inches top and bottom Height: 18.5 inches Depth: 5.71 inches This bag is extremely comfortable, convenient and will last you forever.