How do I add a strikethrough line of sold out sizes that's available on the collection page?

skywearthreads
Tourist
5 0 3

Theme: Impulse

I'd like customers to see which sizes are sold out without clicking on the product to find out. Here's an example:

 Screen Shot 2020-07-26 at 8.21.52 PM.png

 

What code do I need to add & where?

Replies 51 (51)