Hey KKathrin
- take a look at the size tag in the tongue. You should see a 9-digit product number in the pattern of 123456-789. Take that # and give it a search! Should pop up.
Beware of fakes tho. Afaik this model can't be bought anymore so if you see any shops offering them (multiple sizes) they most likely fakes.
Be sure to have them checked beforehand here in case of any doubt.