11% non-biosourced comes from a food liner inside the bottle ... which will soon be replaced by PLA (bio-based but not easily biodegradable ...)
Light and unbreakable ... but expensive (3 € the bottle against a few tens of cents for a glass equivalent and a few cents for a plastic equivalent) it seems rather to replace glass than PET / HDPE for high-end products type Champagne or Crémant ... it will also convince customers accustomed to the transparency of containers.
In short it is not won but innovation has the merit of existing ...
The official site: https://www.greengentechnologies.com/