Simple Liners are used the same way you would use a panty liner. They are great for everyday use and provide protection against natural discharges, light menstrual flows, and light incontinence issues. They also are great as a back up for tampons, sea sponge tampons, the Keeper or the Diva Cup. Whatever your need, they have plenty of absorption for light coverage and you can pick the length that makes you feel most comfortable and secure. These are made with a layer of beautiful flannel and high quality WindPro Fleece that is waterproof.