X Cart is an awesome eCommerce platform based on PHP, but unfortunately there’s no great way to export a product feed to Google Shopping.
If you’re looking for variant information and a dynamic X Cart Product feed for Google Shopping, your’e out of luck with the plugins and native features available in X Cart.
If you truly want a reliable X Cart solution, try Feedonomics, which can dynamically export your X Cart feed to Google Shopping. You can also do title and description optimization by including the brands and variant attributes like color and size.