Create shipping classes for each of your product variations which require one. On your product page, add the attributes for the product, then add the variations, based on the added attributes. Once loaded, you may select the individual product variations to modify price, size, weight, inventory, and shipping class for each specific product variation.
To Setup product variations:
Add a new product.
Set product to Variable Product.
Select Attribute Tab.
Add Attribute Name (in this case I choose “Size”) & add Attribute Values (separate values with a pipe) & select “Use for Variation”. Save Attributes:
Select Variations Tab & Select “Add Variation” or “Create Variations from All Attributes”:
Select the variation you’d like to modify the shipping for and adjust shipping.
