PAU HANA SUP boards - the Ricochet model in particular.
https://www.pauhanasurfco.com/project/big-ez-ricochet/
I stumbled across this new technology . It seems to have come from the white water SUP world. Not much info on it. I imagine it is a cross between a really rigid inflatable with high impact resistance and a traditional SUP. It says they're lighter but nothing saying how much lighter. No technology diagrams etc.
They have extreme impact resistance. 33pounds but it is a big 11footer. But they do say its lighter than other sups in the video.