I've been using this same chest pack for about 2 years. Here are my thoughts:
-Zippers are plastics and have very large "teeth".
-Design allows for easy entry and exit.
-Open design does not trap heat on hot days.
-Rides high so it stays out of the water on deep wades.
Cons (or, ideas for improvement)
-Wish it had a platform that drops down in front with a fly box attached. As it is, you have to pull out your fly box and hold it.