but actually allows I/R and U/V through
I thought that all sunglasses that carry the CE mark (and you can't sell any without them in the EU) were supposed to filter UV A+B to an almost-100% extent?
And
AFAIK IR is not harmful to the eyes (as it's on the other, low energy end of the visible light spectrum) and not visible, so nobody cares about that. (Unless you apply so much IR that you get damage from overheating, but then it's not just the eyes which are harmed.)