Timbuk2 Yield Laptop Backpack polyester Classic rucksack design with cinch top and lid; Secondary organizer pockets on the front and lid with secure zip closure Low profile stretch laptop compartment for full protection without the bulk; Ventilated back panel to give your back breathing room Custom-fit strap design for a truer, more comfortable fit; Quick access side zipper to the main compartment Side pocket holds U-lock or water bottle; Fine weave ballistic with the Timbuk2 color and durability you would expect On-strap bottle opener for party tricks and quick refreshment; Vista loop for "blinky" bike light attachment Classic rucksack design with cinch top and lid. Secondary organizer pockets on the front and lid with secure zip closure Low profile stretch laptop compartment for full protection without the bulk Ventilated back panel to give your back breathing room. Custom-fit strap design for a truer, more comfortable fit. Quick access side zipper to the main compartment. Side pocket holds U-lock or water bottle Fine weave ballistic with the Timbuk2 color and durability you would expect. On-strap bottle opener for party tricks and quick refreshment Vista loop for blinky bike light attachment.