Questions about Bliz Breeze

I ordered the glasses and they look great. Unfortunately way to big. How can I see the sizes of the product?

If a pair of second-hand sports glasses (Bliz) is labelled with slight signs of use, does that mean that something is scratched or something? Is there any more detailed information on this? https://www.galaxus.ch/de/s3/product/bliz-breeze-matt-black-orange-brown-w-blue-multi-sportbrille-15871039?shid=1296129

Is this the small version or the normal size?

Does this pair of glasses also come with a replacement lens, as per the manufacturer's instructions?

Is the rubber band included?