Another n00b question here: a friend of mine is going to Thailand in a few weeks. He will be in a mostly urban environment, but hiking is likely. Citing my (highly relative) familiarity with all things outdoorsy, he demanded I present him with the best and most durable/comfortable/cool looking/sexy internal frame 30 liter backpack in the realm.

I have been using Chinese bags of various shapes and sized to great effect. He wants something with street cred. Help!

P.S. The budget is 100 USD.