\defaultfontfeatures[MonaspaceKrypton-Medium]
{
  Extension=.otf,
  UprightFont=MonaspaceKrypton-Medium,
  ItalicFont=MonaspaceKrypton-MediumItalic,
  BoldFont=MonaspaceKrypton-Bold,
  BoldItalicFont=MonaspaceKrypton-BoldItalic
}