I was sure that these were similar to the famous Luminarc and the French connection seemed relevant. But having trawled their site… they aren’t.

They remind me of Duralex Picardie glasses

	▲	lostlogin 3 hours ago \| parent [-]
		Thank you - that’s what I had in mind. Not quite the same but a lot closer. There was a good thread about the brand here a while back, which your comment helped me find. https://www.duralex.com/en https://news.ycombinator.com/item?id=46015379