WindWings rigid wing sails - GIF

WindWings rigid wing sails.

<video controls autoplay loop style="max-width: 100%;">
<source src="https://diqn32j8nouaz.cloudfront.net/tooltalk_17699908588676.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>


Previously:

Glider with sails - photo
Model boat with numerous sails - photo
Preparing a sailor's lighter - GIF
Sail corner - photo

No sound on my part, but I could imagine if they were even only 10% efficient, that they would pay for themselves in short order.