YITH WooCommerce Wishlist is a plugin that allows your customers to arrange the products they are interested in one or more wish lists. This process allows them to ‘save’ these products, turn back to them at a later moment and eventually proceed to purchase them.
By activating both of the plugins, customers will be able to add to the cart the variable products they have added to their wish list. They can select the variation they are interested in, in the wishlist.