Timbuk2 Spire Backpack Canvas Imported Anodized aluminium hardware for sophisticated look and quiet entry and exit Flap closure for quick access or roll-top for expandable volume and weather protection Incognito reflective panel for high visibility in low light Front zip pocket fits earbuds, cards, cash and your ID. Internal organizer for pens, phones, and other small stuff. Secure zip pocket for cables, earbuds, stylus, cards, cash, etc. Custom-fit strap design for a truer, more comfortable fit. Removable sternum strap. Ventilated back panel to give your back breathing room. Elasticized external side pocket for water bottle or U-lock. Exterior daisy chain webbing offers attachment points for carabiners, helmets, U-lock, etc. On-strap bottle opener for party tricks and quick refreshment.