Milliard Molded Foam Donut Cushion provides therapeutic comfort for sitting, even for prolonged periods of time. Ring shape provides advanced relief by reducing pressure points and discomfort. Cushion also helps maintain proper posture and provide stability while seated. * This pillow is designed to enhance any car seat or chair. Relieves discomfort associated with coccyx injuries. Ideal for comfortable sitting during pregnancy. Perfect for home, car, and office. * Designed to conform perfectly to the contours of your body for maximum comfort and support. Our premium foam supersedes all with superior high density construction for longer lasting product. * Enjoy optimal comfort while sitting for extended periods of time. * Includes durable cover that zips off easily for machine washing. Cushion measures 20"x15".