This Best-Selling Donut Pillow and Seat Cushion helps reduce pressure on the back or tailbone while sitting for extended periods of time, especially on hard chairs! This cushion can provide welcome relief. The high-density foam retains It's shape even after multiple uses and the removable cover is machine washable. It's perfect form contours to the lower body and provides pain relief for those suffering from hemorrhoids, prostate issues or for women experiencing pregnancy related pain and discomfort. Size measures 18 x 15 x 3 and weighs only 7 ounces making it perfect to bring along for travel or to the office.