Honestly, I bought a chain and combo lock and it works just as good as a Kyss bag, it is also a lot less expensive. We don't bring much to the beach, plus we read the good old fashioned hard cover books, therefore we don't have a Kindle or IPad. As far as a phone we are on vacation and don't carry one with us when we are at the beach. I think you can figure out a less expensive way to keep your valuables safe. I never had a problem for 14 years.