Stayfree Secure XL Ultra Thin Sanitary napkins (40 Count) For a superior dry feeling with better coverage than regular pads, choose Stayfree secure xl ultra thin. The pad is flexible, ultra-thin, extra large and fits your body, so you can stay secure and keep moving. Unlike thick pads, Stayfree secure xl ultra-thin fits the curves of your body and helps you move freely even on your period days.