^^^I know your name is "onthecouchagain", but if you actually exercise outdoors (ride your bike, hike, etc), or you just want a sportier bag, I have one of these, and it is awesome.
😉
I have a yellow one, but there are other colours:
http://www.ospreypacks.com/en/product/osprey_hydraulics/raptor_14
The bag is tiny at only 14 litres, but there are larger sizes available (I believe an 18L version). As small as it is, I can put my 11" MBA + my LA Robe sleeve into the water resevoir compartment (i.e. like a "Camelback"). The other compartments are perfect for holding some notebooks, my Kindle, water bottle, AC adapter, and cables. Also, it's possibly the best cycling, or general "active" backpack on the market (Deuter packs are also great), looks awesome, and is very lightweight.
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