The abstraction of the variations is called the variation parent. The title element of the variation parent names the variations, such as "Long Sleeve Classic Pocket Tee.. Because the parent ASIN is an abstraction, it can't be purchased. It is not associated with an offer.
The following snapshot shows how a parent ASINS's information is displayed on Amazon Website. In this example, the price is not shown and the dimension are not selected. The price range of child ASINs are shown instead.
The following snapshot shows how a child ASINS's information (one of the child ASIN of the above parent ASIN) is displayed on Amazon Website. In this example, the actual price of the product is shown and the dimension are selected.