The coolest invention ever?

This is completely unrelated to Entrepreneurship or Economic Development but it is related to incredibly cool products, though definitely in the very very early adoption stage (product/market fit?!?). I’ve been missing the ocean (having spent a lot of my childhood on an island) and been going swimming every evening (no matter how cold) but this little gadget just transforms what swimming means:

Useful? I’m not sure, but it’s definitely amazing (thanks to Mike Krieger for finding it). By the way, did you notice the little icons beneath the photo? The photo above is an Apture Super Embed and you can learn more about the Lunocet Monofin by clicking the icons on the bottom. Try it out!