The Carex Performance Health Uplift Seat Assist Cushion, model MED-UL300-EX, is a black waterproof and water-resistant seat cushion designed to provide additional support and comfort while sitting. The air seat cushion feature helps to promote proper posture and reduce pressure on the tailbone, making it ideal for those who spend long periods seated. With its durable construction and sleek design, this seat assist cushion is a practical and stylish addition to any home or office setting.