It's funny that they don't list/have a US dist;
http://www.catlike.es/english/index.html...I bought mine from my LBS (
http://www.pedalheadroadworks.com/ $309),...I dont think they fit small either, My Whisper plus is a Small while my Specialized S-Works is a Medium, I guess it all depends on your head...good luck with your search.
They even come with a nice case