This cushion combines a seat pad, backrest, and lumbar support into a single versatile accessory. It is designed for comfort and support in a variety of settings, including office chairs, dormitory seating, and floor use, and it doubles as a decorative cushion in home spaces with its bright yellow color. Key benefits Ergonomic lumbar support helps reduce lower back strain during long seating sessions. Cushioned seat improves comfort for desk work, study, gaming, or lounging. Versatile placement fits most office chairs and can be used on dorm chairs or directly on the floor. The yellow color adds a cheerful decorative accent to home decor. Portable and lightweight for easy relocation between rooms or setups. Key attributes Functionality: seat cushion with integrated backrest and lumbar support; also usable as a floor mat and decorative cushion. Compatibility: suitable for office chairs and dormitory seating; can be used on the floor. Size: dimensions are not specified in the information provided; please refer to the product listing for exact measurements. Material: not specified in the information provided; refer to the product listing for fabric and fill details. Performance: designed to offer stable seating and targeted lumbar support for extended use. Use cases 1) Office workstation: place on an office chair to improve posture and comfort during long computer sessions. 2) Dorm study space: carry to a dorm room to provide lumbar support on study chairs or to transform floor seating into a more comfortable area. 3) Floor seating or lounge: use on the floor as a mat for reading, gaming, or relaxing, or as a decorative cushion on a sofa or bed. Additional notes Color: yellow. This product supports multiple seating arrangements and can enhance comfort in work, study, and home environments while adding a decorative touch.