This round cushion is made of breathable polyester material. - Color: Yellow-greenish white - Material: 95% polyester, 5% polyurethane Thank you for viewing. I bought this for postpartum use, but I didn't use it because I used the hospital's during my stay. I also didn't need it after I was discharged. There is a small stain (see photo 5), but it's barely noticeable. Cushion diameter: 40cm Center circle diameter: 8cm