Highly effective waterproof shell. It is perfectly impervious to snow, sand and dust. It withstands immersion for at least half an hour as advertised. I use to protect my iPhone by putting it all in a waterproof bag to make shallow snorkeling (max. 3 m) and there has never been any problems. I really do not understand the mixed reviews for this product. This is to wonder if users speak of this hull.
