Keeping sheets in place is more challenging on an adjustable bed that moves around more than a conventional mattress. One way to keep your sheet corners from popping off the mattress is to use a fitted sheet with deeper pockets. You can also try using sheet straps or suspenders. Your choice of material will also have an effect on how easily you can keep sheets on your adjustable bed, since fabrics such as satin or silk will have more slip, making plain cotton sheets a safer choice. And remember that split adjustable beds should have dedicated fitted sheets for each side, since a single sheet pulled over both halves of the mattress is likely to lift off once one side of the bed is adjusted upward.