- Sponge Bed Gap Filler: Made from high density 40D sponge, highly resilient, comfortable and does not collapse. - Close the Gap: Fills the gap between the mattress and the headboard, wall or footboard, and prevents pillows, pets and toys from slipping off the bed. - Easy to Cut: Can be cut freely to the desired length and angle. Proper compression is required for shipping. You don’t have to worry about warping. They fully expand after 24 to 48 hours. - Wide Application: Sponge strips provide excellent comfort and support and are easy to use. Can be used for dormitories, bed seams and patchwork beds. - Use Scenarios: - In a dorm room, place along the edge where the bed meets the wall to keep pillows and belongings from falling off. - Between the mattress and headboard to fill an awkward gap and prevent items from slipping. - Along seams on patchwork or assembled beds to create a smoother, more stable sleeping surface.