it seems that many roadies don't want to use hydration packs but i love mine. i have two and both camelbak. for short rides i use the small one that just holds fluid and has a cord to hold a windbraker or something and my second one is a full fledged one with a big pocket to hold a tube and my tool kit for those long rides in the middle of no where.

i hope this helps. oh, i found that www.performancebike.com has the best deals on gear like this.

christine