Material and design The inner filling combines cotton-linen fabric with a high-density sponge core to provide stability and comfort across the gap. It is designed so you can sleep comfortably without feeling the gap between beds. Practical benefits Close the gap between the headboard, wall and mattress or footboard with this mattress gap pillow. This foam cushion fills the space so you won’t lose pillows, pets or children’s toys into the gap. Wide application This durable bed gap filler delivers comfort and support as well as convenience. It can be used as a double bed bridge, as an armrest or headrest for wooden sofas, and to bridge the gap between headboard, wall and mattress. Removable cover and care The cushion cover is removable and features a zip for easy on and off, making changing and washing convenient. The zipper is user friendly. The sofa armrest cushion cover can be washed by hand or machine. Use scenarios - Between two beds or at the edge of a single bed to sleep across the gap without feeling a seam or hollow space. - As an armrest or headrest on a wooden sofa, providing extra comfort and preventing pillows from falling off. - To bridge the gap between headboard, wall and mattress, keeping pillows, pets and toys from slipping into the gap and maintaining a tidy sleeping area.