Timbuk2 Shotwell Laptop Backpack polyester Padded, low profile stretch laptop compartment for full protection without the bulk Smart power brick pocket remembers where your cords are so you don't have to. Lightweight ergonomic shoulder straps are designed to fit people, not robots External zip pockets for easy access to your daily essentials. Super lightweight Mission6 nylon fabric. On-strap bottle opener for party tricks and quick refreshment Internal organization for accessories, and gadgets. External stretch pocket for your U-lock or water bottle. Vista loop for 'blinky' bike light attachment.