Easy to order and customize: Choose the colour and "custom size", then click "Customize Now" to set the exact length you need. Available thickness options: 5 cm, 8 cm, 10 cm, or 15 cm. Functional design that solves common bed problems: This bed gap filler closes the space between mattress and headboard or wall to prevent items (remotes, phones, small toys) from falling through, reduce drafts and noise, and stop mattress movement. It also protects the mattress edge and wall. Comfortable, durable materials: Covered in high-quality linen fabric that is breathable and hard-wearing. Filled with elastic foam that provides reliable support, a comfortable feel, and long-lasting shape retention. Versatile use and compatibility: Fits single, double and king beds. Can be used as a bridge between two mattresses, an armrest or headrest on a double bed, a cushion for wooden sofas, a wall gap filler, or a bay window pad. Key benefits at a glance: Eliminates annoying gaps and keeps items accessible Adds stability for a smoother, more even sleeping surface Creates a comfortable backrest for reading or watching TV in bed Breathable linen + supportive elastic foam for comfort and durability Multiple thickness options to match mattress height and gap size Use scenarios: 1) Convert two single mattresses into a secure king-size sleeping surface by placing the gap filler along the center seam to reduce movement and improve comfort. 2) Place along the headboard or wall to stop remotes and phones from falling into the gap and to block drafts while you sit up reading or watching TV. 3) Use on a wooden sofa or bay window bench as an armrest or back cushion to add comfort and cover uneven gaps. Specifications: Materials: Linen fabric cover, elastic foam filling Thickness options: 5 cm / 8 cm / 10 cm / 15 cm Compatibility: Single, double, king beds; also suitable for sofas and bay pads Ordering reminder: Choose your colour and enter "custom size" before clicking "Customize Now" to ensure the filler matches your bed dimensions.