Avoid any waist pack that mentions fly fishing. You will pay 2 to 3 times more than the same waist pack in the outdoors or hunting sections. The things I look for are sturdy plastic zippers (I fish in salt), just enough capacity to hold my gear, and a water bottle holder. I think the most I have ever paid for one is $20. The one I have used the most for over 10 years came from Sports Authority and cost $12.95.