Timbuk2 Proof Messenger Bag Swing Around tricot-lined side-access compartment, fits up to most 17" laptops. Bonus internal organizer in main compartment. Bike-tread-inspired modular back panel for maximum ventilation and comfort. Custom-fit strap design for truer, more comfortable fit. Durable, easy-grip grab strap handle for on-the-go moments. Side pocket holds your U-lock (or water bottle).