It's an easy way to featured your products on Facebook fan page. Featured product shows on the top on the product list in your Facebook page. These are the steps. You may follow all these steps:
Step 1: Open the products list in Premium Theme.
Step 2: One the right side there are some icon given in front of products. here is heart shape icon,click on this icon (shown with circle) to featured the product.
Step3: Then you will get a notification as shown in the image. and your product will be features in Facebook page.
Step4: Featured product will be shown on the top of product list with heart icon in the Facebook page.As shown with the circle.
if you want to Unfeatured the product then again click on the same icon in premium Theme product list,then product will be unfeatured and it will go on the same position in the list.