Amazon.com: CamelBak Commute Bike Backpack : Electronics。Backpack was too bulky for me, took tags off before trying on but brand new… H.A.W.G.® Commute 30 Backpack is a roomy pack that comfortably carries the tools of your trade. The clam-shell design opens to reveal 30-liters of storage, a laptop compartment with a weatherproof sleeve, external pockets for hydration, plus safety conscious details like a bike light loop and 360-reflectivity. A Command Center™ Harness keeps essentials organized and the cooling Air Support™ Back Panel will make your ride from points A to B a breeze.