That looks interesting. If it was to ask Mr Google to see one what would I be calling it please? How do they work out of curiosity? If it works then I like where John has put his.
Thanks for the idea coz I’m stuck with the polorised sunglasses as they are prescription ones which I also use for skiing.
Cheers
HB

Plus Four Bentley Velvet Red “Grandi P”
Golf ehybrid thingy “Toadie”
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