Messenger bags are stylish, but when it comes to regular old commuting minus the rush of the big city, the Blackburn Local Rear Pannier is a better option. The Local mounts on any standard rear rack. While removing the bag from your rack is a bit more involved than just jumping off your bike, pack at the ready, it's a heck of a lot more comfortable.The interior of the Local Rear Pannier carries 793 cubic inches of your valuables in convenient organizational pockets. The main body fabric is 210 denier polyester that's been treated, so it's abrasion and water resistant. A padded exterior pocket keeps your cellphone, MP3 player, or sunglasses safe and secure. While the Local is compatible with most rear racks, it can be locked when used with Blackburn's Interlock system, adding even more versatility to an already utilitarian pack.