Yocushion (with cover) Made in Japan, Black Size: 38cm (length) x 40cm (width) x 5cm (thickness) Material: Body: Polyvinyl chloride; Cover: Polyester This cushion is recommended by hospitals for long trips in vehicles, for those who work sitting in chairs, and after hemorrhoid surgery. It can distribute body pressure, reducing the burden on the buttocks and providing excellent breathability. My family accidentally bought two, so I am selling this one. Thank you.