The question about sizes is always a difficult one when ordering online I find. Especially the slim pyjamas on our site run rather smaller than usual, but we do state that on the respective pages.
But better safe than sorry! So please ask me if you are in doubt!
The sizes of Junior bedding within Europe differs. We carry both EU and German sizes. See article description. When I first started buying bedding for my son, I made a big point about this, about now I find that EU sizes also work for German size blankets (the difference only being 5 cm: 100x135 to 100x140).