<https://www.rohrspatzundwollmeise.de/en/pure-100-wolle-sirius/7549>
<http://schema.org/description>
"This non-scratching wool has a silky lustre and a smooth surface. For technical reasons it could be that with this quality there may be one knot which does still reach our quality standards."
<https://www.rohrspatzundwollmeise.de/en/pure-100-wolle-sirius/a-1236116>