I have never really liked back packs. Can I use the for day hikes?

I use messenger bags all day walking/riding around the city, but this pack really isn't designed to be hauled around on a big day hike.

You might want to check out Timbuk2, Crumpler, or Chrome messenger bags. Alternately, try on some Camelbak packs. They cost a little bit more than the competition, but they're much higher quality, intelligently engineered, and have a practically indestructible/non-leaking reservoir.

If you do decide to get a messenger bag, I highly recommend getting a pad strap along with it.

http://www.backcountry.com/store/brand/100000309/Timbuk2.html
http://www.backcountry.com/store/brand/100000380/Crumpler.html
http://www.backcountry.com/store/brand/89/CamelBak.html

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