ISO 19410-1
Footwear sizing - In-shoe measurement - Part 1: Shoe length
Schuhgrößenbestimmung - Messung des Innenschuhs - Teil 1: Schuhlänge
Responsible national committee
NA 062-05-71 AA - General aspects for footwear and footwear components
Responsible international committee
ISO/TC 137 - Footwear sizing designations and marking systems