<https://www.knitca.com/woolly-warmth-yarn/#product>
<http://schema.org/description>
"Content: 100% Wool\r\nWeight: Worsted (4)\r\nYardage: 100 m / 110 yds in a 50 g / 1.7 oz ball"
<https://www.knitca.com/woolly-warmth-yarn/>