In reply to Blackcountrybill:
Hi Blackcountrybill
Not sure about the sponsorship part, I am sure she is fine wearing what she wants, but I can see if she wants to use photo's etc for her profile that may be linked to Oakley that might be an issue.
I live in the Southern French Alps and used to live in Oakley sunglass's wore them climbing, biking, ski touring and just kicking around,really like the lenses and they are fine for 80% of the time, but they do struggle on really bright days on snow, you really need to have a good pair of cat 4 glasses for that and I don't think Oakley do an equivalent.
I stopped using Oakley due to have some issues with breakages and then poor customer service.
I would say take a a pair of Oakley's that give you the best eye cover and then have a pair of these in the bag https://www.decathlon.co.uk/mh-570-cat-4-id_8329379.html
Cheers