Say Goodbye to Bed Gaps: Adjustable Comfort & Handy Storage: This bed gap filler fills gaps of 0-5 inches between your headboard and mattress, preventing items and pillows from sliding off. The 25D high-density foam provides comfortable support and maintains its shape with frequent use. It’s adjustable for height and can be used for back or leg support. The large storage pocket keeps essentials like phones and glasses handy. The anti-slip PVC-coated fabric bottom keeps it in place. The durable, removable polyester pillowcase is machine washable. This headboard gap pillow offers comfort, support, and organization.