Description: The hole in the middle of the pillow provides free air circulation. Allows you to sit without feeling hot or sweaty The cushion is made with velour and memory foam filled. Promotes good posture and healthy weight distribution for hours of comfortable sitting it works everywhere with a seat, such as plane, bus, car, wheelchair, office chair or home. unique petal design, widening, thickening, will to the body's shape to provide optimal comfort, will not flatten out with prolonged use.