The zipper broke the first time I used it! I sent you an e mail on Monday with no answer from you. I think you need to stand behind your products.
I really like this pak set. The width of the collar could be just a little smaller and more curved to allow both paks to ride not so high on the chest. This also could be achieved by making it adjustable at the chest so both paks ride lower if the person wishes them to be lower. 👍🎣