Totally waterproof but a little small one pair has been totally under water and contents stayed totally dry just a little small
Look like there well made so hopefully will survive our trip to Iceland only criticism up to now is when the bags are filled not much material left to get a good roll up on the top of the bags should be able to get 3 good wraps before clipping shut but difficult to do.
I've used can couple of my own extra straps to secure easier.
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