1. quality material: The mattress extension cover is crafted from linen fabric, offering breathability and a delicate touch. The insert is filled with enhanced ecofriendly foam, known for its density and elasticity, ensuring longlasting comfort when leaning against the headboard. 2. Solve the bed gap: Our pillow permanently eliminates the issue of bed gaps while reducing the space between the footrest and the bed, so you'll never lose your pillow again. 3. Bed gap filler: Thanks to its density sponge, the bed pillow boasts elasticity. The headboard cushion resists deformation for longterm use. Additionally, the gap filler pillow adapts flexibly and snugly to the gap. 4. Versatile applications: Designed for gaps between your mattress and headboard, mattress extensions, wall edges, or the space between two mattresses, our bed gap filler creates a 'wider mattress' effect. It ensures more restful sleep and adds coziness to your home.