i am looking for a good hydration pack (like a "camelbak").
will be out in sun for extended hours squating and bending over.
well if you want about 70 ounces of water i would recomend the jansport one because it is only 20 dollars on Jensonusa.com and has a life time warrenty. If you want more then that like 100 ounces you will need to get a camelback and those are alot more expensive any where from 50- 100. Camelback has ones with storage and ones with out and that is where u will need to make your choice.
i have jansport hydration pack and i love it. I use it for mountain bikeing, unicycling, hiking and it works great