Kid takes swim vest off while in the pool?

Amazon: Speedo Kid's UV Neoprene Swim Vest

What happens when you combine the stubbornness of a toddler with the increased manual dexterity of a preschooler, then add water? You have a kid who can undo the buckles on his floaty swim vest.

Here’s how Jennifer staved off the problem (for the next few pool visits at least).