Didn't work. I used this when sailing about 1/2 mile down the river. When I got out of the river, everything in my wallet got wet. I assumed I hadn't sealed it very well so I tried again the next day. same result. My waterproof phone case, on the other hand, worked great but the differences were significant - the phone case uses 3 sealing strips while this case only uses one sealing strip. If you need to keep your stuff dry I would recommend looking for a wallet with more than one weatherstrip OR heck! Just buy a phone case and use it! Sorry but that was leaked which is why it gets 1 star.