The new Commute Messenger from Timbuk2 has an external zippered laptop compartment that also has room for a tablet and cables, and it unzips to lay flat for airport security checks. It’s made of ballistic nylon, and it has a waterproof TPU flap and a waterproof hypalon rubberized bottom to keep your stuff dry inside. It has all the features and organization pockets you expect from a Timbuk2 messenger. It also has a pass-through on the back that allows you to slide it onto the extended handles of a rolling bag. It’s available in small, medium, and large sizes for $109-$129 in pre-made versions. You can customize your own Commute bag starting at $149.