I am going to be competing (I use that word loosely) I my first Triathlon this summer and I don't know what size/capacity CamelBak I should buy. They start out around 32oz and go up from there. Any suggestions...Thanks.
I would get a large bladder. I use the Octane 14+ for trail runs and it has the 100 oz (3 liter) system. It's pretty heavy when it's full, but there is no rule that says you have to start with it filled to capacity so I usually run with less than the maximum 3 liters. You can't, however, overfill a smaller system if you want to carry more water. Especially considering that weight isn't as much of an issue on the bike, I'd "live large" so to speak.