The rough and tumble world of bike commuting is liable to take a toll on your gear, so Timbuk2 designed the Especial Tres Backpack with rugged fabric and extra tough stitching to stand up to life on the road. A roll top closure, TPU front flap, and fully seam taped internal liner keep all your gear dry if you get caught in a shower, and an expandable front compartment easily holds a helmet when you're out of the saddle. A relative giant with 40L of storage capacity, the Especial Tres is perfect for riders loading up for longer hauls. External compression straps lock down your load and shrink the bag so it's not a wind catching tent when it's empty, and the flexible back panel and shoulder straps come with mesh vents to keep your back sweat from building up. A laptop sleeve keeps your 15in computer safe, and dual water bottle pockets double as stash spots for U locks.