Yarn Weight Classes
If you are substituting yarn, be sure to do a gauge swatch so you know what the finished fabric will look like. It's also important to understand how much yarn to purchase when substituting.
Here's a short video explaining the difference between yarn weights:
View current Lion Brand yarns and filter by weight
View discontinued Lion Brand yarns and substitution info
![Craft Yarn Council Weights](https://www.lionbrand.com/s/files/1/0286/1504/9309/files/CYCYarnChart_edit.jpg?em-origin=cdn.shopify.com&em-format=auto)