By default, variant values appear on the product details page in the order specified when you created the product type. You can override the default order for individual products.
To reorder variant values on the product details page:
On the Catalog page, open the product whose variant values you want to reorder.
On the SKUs tab, select the name of the variant whose values you want to reorder from the Configure Storefront Display list.
Reorder the values and click Update or Save.
Click Save to close the product.
