In order to pick the right hydration pack take these ideas into consideration:
- Duration of your rides
- Elements you usually ride in (rain, mid-day heat, etc)
- Riding in remote vs populated areas
- Do you ride all year? Maybe 2 packs would be better
Even though the below article is a review from a U.K. mountain biking magazine, many of these hydration backpacks are available here in the U.S. as well.