Hello @The Bru's,

Thanks for sharing your question with the Klaviyo Community.

It’s currently not possible to dynamically curate other items to customers using size as the determinant. However, if you are looking to suggest similar items to customers who have previously purchased from your store, I recommend building an upsell or cross-sell flow. Also, including product feeds in these emails are a great way to upsell or cross-sell products within a specific category or collection. I also recommend looking into the additional resources section of this article for more ideas.

I hope that is helpful!