 But drink lots of water, carry it in a big container so you don't feel like you're limited. I hate Camelbacks because it is so hard for me to get enough water out quick enough. I just struggle to use them. I'm always fighting to get the water out, and I'm like, just give me the water. I don't bother with one of those, even though the Army issued them. For me, it was a very difficult way for me to get hydrated. I just couldn't get enough water.