●Cotton ●PLEASE NOTE:We deliver it in vacuum packaging. After you receive it, please open the package and leave it for a few days or tap it to restore fullness before use. ●♥ PLEASE NOTE Size:43 * 40 cm / 17inch * 15.7 inch;♥ Material:Adopt excellent Short Plush + PP Cotton material, Soft and comfortable,safe and non-toxic. ●♥ With 2 holes: Anti-slip design on the bottom to prevent movement,The holes help to fix infants body and legs regular but also make the feel comfortable. ●♥ Upright Seating Position: Helps Stabilize your Babys back, while they Learn to sit up. Can help 3-10 months baby learn sitting, comfortable and safe.It can also be put in car child safe seats. ●♥Back zipper design,:easy to remove and wash The Cover can be Machine Washable, easy to clean and disinfection every week.