Ergonomic design: Bed backrest positioning, neck support, and lumbar support for reading and watching TV. Maintains the correct posture to help relieve back pain while you relax. Also functions as a leg elevation cushion to improve venous and relieve calf pain, varicose veins, and swollen legs. Note: manual measurement may have an error of 35 cm. materials: Made from cotton and linen fabric, filled with PP cotton for soft, comfortable touch. Elastic, skinfriendly, and breathable. Fashionable and suitable for all seasons, bringing warmth to your home. Secure and easy to install: Includes a pair of straps to hold the cushion on a garden sunlounger and prevent slipping. Simple installation that combines practicality with a neat look. Decorative cushion: Button design adds a three dimensional effect. The back cushion features a unique retro cover, enhancing the style of any room or outdoor space. Use scenarios: Ideal for bed or sofa use while reading or watching TV; for elevating legs to ease swelling or calf discomfort; suitable for outdoor lounging on a garden sunlounger to prevent slipping while adding decorative value.