Andux Land 4 pieces/set Sheet Holders, Keeps the bed sheet in place CDJ-04 Set of four. Lock together the piping and sheet. Sleep-Snugs keep sheets in place throughout the night. Stops popping off corners and sliding sheets. Promotes smooth, snug, wrinkle-free sheet. Recommended for effective smoothness of sheets, and will bring greater comfort to bedridden by eliminating wrinkling of sheets.