It was a pair of scuba tanks in a custom bag which was too small for the tanks, so there was no really secure inside. But, it was attached to the handles with

It was a pair of scuba tanks in a custom bag which was too small for the tanks, so there was no really secure inside. But, it was attached to the handles with one of these: https://www.amazon.com/dp/B0B34Y5YZS https://www.amazon.com/dp/B0B34Y5YZS There are people who dive down and find lost stuff on the bottom of lakes, and people who go magnet fishing, they still might find your keys!