I have an old bookbag that I've been using as a daypack. I'm considering making some modifications so that it will be better for hiking.

What I'm considering: Adding an exit flap for my hydration bladder drink tube, and adding a hydration bladder pocket.

Does anyone have any experience making these types of changes? What kind of material would be best for a hydration pocket? Most importantly - how much would the material cost?

If the cost is more than say $15 then I would probably want to either build a whole new daypack with hydration pocket or just purchase a 900 - 1300 Cu.In. daypack.

Edited by arcane (06/11/10 03:11 PM)