1、Ring Design: The donut seat cushion has a ring design, zero contact with piles, comfortable and healthy, zero contact between the anal part and the seat, avoiding the area of pile pain. 2、Soft Material: The donut seat pad is made of memory foam, soft and elastic, breathable, avoiding wet nd heat after long time sit, comfortable for use. 3、Pressure Relief: The donut pillow can relieve the pressure of your hip and leg, feeling comfortable after long time sit, can well support your hip. 4、Front Groove:The orthopedic donut cushion has groove design both front and rear, making your legs not easy to numb, fitting your hip curve, relaxing your legs. 5、Various Use: The seat pillow can also be used as a waist pillow, suitable for car, home, office, travel, having a variety of applications. Item Type: Donut Pillow Size: Approx. 30 x 40 x 7cm/11.8 x 2.8 x 15.7in 1 x Donut Pillow