This Innovative Key-Loss Prevention System Will Give Peace Of Mind To Any Boater. If A Set Of Keys (Or Any Item Up To 2.8 Oz.) Falls In The Water, The Key Ring Automatically Self-Inflates. Within 30 Seconds, Your Keys Will Rise To The Surface, Lofted By The Single-Use 14" Inflated Tube.
I was getting on my boat when I lost my footing and in order to break my fall I dropped my keys into the canal. I was at a loss of breath for a second until I realized they were floating right there. So I reached down, grabbed them and wen on with my day. The day would have gone very different if I didn't have these little life savers.