lillyzen donut pillow for tailbone pain relief memory foam seat cushion orthopedic seat pressure relief sitting coccyx sciatica hemorrhoid pregnancy postpartum office chair butt pillows (black blue) lillyzen we want you to be comfortable – whatever the reason! lillyzen's luxury donut cushion, with it's ergonomic unique contours, aims to maximise your sitting comfort, relief and support, by reducing the pressure around the tailbone and coccyx area the generous dimensions, coupled with a strategically sized and shaped cut out, caters for both men and women. made of 100% premium memory foam, the cushion is soft yet supportive, will not flatten and is suitable for most body shapes and weight of up to 250 lbs. it's sleek, modern design, looks great –transform any seat into some comfort - home, office, car, outdoors, wheelchair, plane, stadium.