While most Arc'teryx gear is often associated with backcountry climbing and mountaineering, they do make excellent commuter packs–like this Arc'teryx Blade 24 Backpack. Great as an alternative to a business briefcase or daytrip carry-on, the Arc'teryx Blade 24 Backpack offers 24 liters of carrying space and has an adjustable internal laptop sleeve/protector with enough room to accommodate a latop computer with a 15-inch screen. A hidden passport/boarding pass security pocket inside the backpanel allows you to keep essential papers and currency close at hand, but not in a location that's obvious to thieves and snoops. Other features include a lined top pocket for your PDA, MP3 player and cellular phone. A separate front pocket has a quick-access organizer for pens, pencils, USB flash drives and other small workplace essentials.