This was the keyboard - https://www.amazon.com/gp/product/B0179N39KS/ref=oh_aui_sear... - it's incredibly light and cheap but one month later I'm not sure I'd recommend it. A bunch of the keys were randomly mapped incorrectly and it's started to flake out on me a little bit.
Looks like Karnotech Foldable Silicone Keyboard
Looks like you are right. Based on the image I thought it was something mechanical. Looks nice, but I'm not fond of foldable keyboards :( .