This is a listing demonstrating the variation listing. Variable Listings a let you offer a set of variations on a product or service, with control over prices, stock, image and more for each variation. They can be used for a listing like a shirt, where you can offer a large, medium and small and in different colors.
For more details on webstore features go here: Webstore Features
View webstore instructions and to get a better feel of the vendor dashboard go here: Webstore Listing Explained