Other similar items specify depth. Can you swim with this product? depth?
I haven't used the Passport Locker for swimming, so I can't comment on how well it works for that. I have used the See It Safe for snorkeling and it kept everything dry. The Passport Locker has similar construction, so my guess is it will work well. Sorry I can't be more help.
You can swim with this product, however I have not gone below surface depths of 6-8 feet. If you are thinking about scuba diving with this product, I would do a trial run with non-essential material in it, before you dive with say your passport in it.
I used this product while snorkeling around 5-6 times and
Never had any leakage. Didn't go below 10 feet.