The front flap is closed by a large plastic buckle, to the left is a large pocket lined with 200 denier ripstop nylon which is closed by a #8 YKK splash-proof zipper. On both sides are smaller pockets perfect for mobile phones, iPods and PDAs. There's also an exterior water bottle/umbrella pocket that can be cinched down with compression straps when not in use.
The main compartment is built with Brain Cell (US$50) hard-sided laptop sleeves inside the bag.
features removable Annex clips designed to securely connect one of Tom Bihn's eight differentAt US$225 the ID/Archetype combo might be a little pricey for people on a budget, but it's been my experience that quality bags built with good materials cost a little more - but they're worth it.
What do you carry your MacBook in?