Hi @All5th ,
There are several ways you can go about merging your products 
.
One option is to export the products from Shopify to a CSV file, manipulate the data in Excel to consolidate them into a single product, and then import the modified file back into your Shopify store.
Another approach is to create a new product, which we’ll call “Fusion Grey Wash Set” as your primary product. You can then use the Easify Product Options app to set up size options for this main product. These size options can be linked directly to your existing “Fusion Grey Wash Set 2 oz” and “Fusion Grey Wash Set 4 oz” products. Here’s how you can set it up:
- Storefront:
- In-app settings:
