"Shopping Cart will improve your product landing pages and will provide an additional cart view for your buyers.
For product landing pages:
-Instead of “Buy it now,” your customers will have the option of adding the item to their cart.
-Quantity and size selection now occur directly on the campaign page.
For additional cart view:
Customers can view their cart by clicking the cart icon at the top right of the store’s header.
In the new view, they will see a list of items they’ve added, including the size and quantity.
From this view, customers can also adjust the quantity or remove items altogether.