Photo: Mark Wiens
You'll drink more if your water doesn't taste like a stale reservoir. Add flavor and vitamins with this drink mix, which comes in a box of ten packets (add one packet to 16 or so ounces of water; 20 calories each). propelwater.com
From 2007 Buyer's Guide Get the Latest Issue
Want to get Outside more?
Sign up for our newsletter and get the latest fitness tips, expert gear reviews, the best travel advice, and more.