Cheapflights suggests you "stash your credit cards in your flip-flops" April 10 2014
Figuring out where to stash your cash and credit cards for a visit to the beach can be a real drag.
A bag is a clear option – but on the downside, thieves are attracted to backpacks and handbags.
Matt Potts, a US-based inventor has come up with a novel solution to the problem. He’s created a pair of flip-flops with a small draw in each arch, which he calls SlotFlops.