UNDER-RIDERS underwear liners are made to keep drips, leaks, and ‘Skidmarks' off underwear. UNDER-RIDERS are 100% cotton -- and the wearer won't even notice them. One size fits all. They stay in place all day. Peel off and throw them away when soiled. UNDER-RIDERS are perfect for adults that need a little extra protection without going to bulky ‘pads' and other devices.