Sponge Pillow — Pillow Custom size available: Click ' Now' to a size of the Sponge Pillow to fit your bed, sofa, or travel needs. Choose foam thickness: Available foam filling thicknesses — 3 cm, 5 cm, 8 cm, 10 cm, 12 cm, 15 cm, 18 cm, 20 cm — so you can select the level of comfort and support you need. Purpose and performance: density foam provides consistent comfort and support, fills gaps between the mattress and headboard or wall, and adds a stable arm or headrest for wooden sofas. Designed to stay in place throughout the night for uninterrupted rest. Removable, washable cover: Zippered cover removes easily for machine or hand washing. The secure zipper keeps the cover in place during use and makes cleaning quick and practical. Problem solved: Effectively reduces bed seam and bedgap issues by filling the space between the mattress and footrest or headboard, preventing items from falling into the gap and improving sleeping posture and stability. Key benefits (why you need it) Better sleep and comfort: Prevents uncomfortable gaps and supports your head, neck, or arms for more restful sleep and relaxation. Versatile use: Serves as a gap filler, bedside bolster, sofa arm/headrest, or compact travel support. Easy maintenance: Zippered, removable cover that is machine or hand washable for hygienic care. Custom fit: Multiple thickness options and custom sizing ensure the pillow fits your specific furniture and mattress setup. Practical applications Sleep: Place the pillow between the mattress and headboard or at the bed seam to eliminate gaps, stabilize bedding, and improve head and neck support. Living room: Use as an armrest or headrest on wooden sofas for added comfort while reading, watching TV, or resting. Travel and relaxation: Use as compact support in cars, trains, or for travel naps to reduce pressure and maintain comfort on the go. Specifications and care Foam filling thickness options: 3, 5, 8, 10, 12, 15, 18, 20 cm. Cover: Zippered, removable; machine wash or hand wash. Functions: Gap filler (headboard/wall to mattress), arm/headrest for wooden sofas, bed seam stabilizer to reduce slipping. Ordering note To get a size, click ' Now' and select the desired dimensions and foam thickness.