"Cradles the Back & Bum - Made of memory foam cushion, both the lumbar support pillow and office chair cushion help relieve pressure from the body, letting you sit comfortably even or long periods. Ergonomic Design for Maximum Comfort - The desk chair cushion features an ergonomic ""U"" shape that supports the lower body - from the hips, sciatica, and tailbone/coccyx down to the bum and legs. Promotes Good Posture - The lumbar chair pillow and seat cushion for office chair provide optimal support for the spine. They're perfect for employees or students who tend to hunch over their desks. Securely Attaches to A Chair - The back cushion has a strap securing it to armchairs, gaming chairs, or car seats. The back support cushion is portable and can easily be transferred to other chairs. Low-Maintenance Seat Cushions - Not only is the mesh cover of the seat and lumbar cushion foam breathable and comfy. They're also removable and washable, making it easy for you to clean them anytime. - Havendro Lumbar Back Support Cushion Car Seat Home/Office Wheelchair in Black"