If you are not sure how to measure your mattress, we are offering you templates to simplify the process. Select the shape of your mattress below.. Then click any of the pictures and a document will open that will provide you with enlargements of the templates. Print the page that most resembles the shape of your mattress. You will need the free Adobe Acrobat Reader to view and print these files if you don't have Acrobat Reader you can download it buy clicking on the button below.