I would love to know where they can be purchased and if they have a nose piece withen them since anything with a nose piece wouldnt work with a half mask.
There are many available. If you search any reputable search engine's Images you will see they type of thing. Of course you will see lots of "fashion" glasses/goggles, but look for something coming from a fire or safety shop.
Check any large, international shopping site for key words like "fire goggles" or "fire safey goggles" or "fire protective goggles" and they will come up with a few hits - remember to check world wide if you don't find anything locally.
(No affiliations to any sellers, searchers etc)