This is a donut cushion purchased at Akachan Honpo the year before last! I used it for about two weeks, but it's currently stored in the closet. Original price: 3,828 yen (tax included) The following is from the Akachan Honpo website: The large hole in the middle reduces the burden on your buttocks. The flat bottom provides stability. ・Removable and washable cover ・For pain during pregnancy and after childbirth ・Also works as a back cushion ●Size: Diameter approx. 37.5 cm *Because it is finished by hand, there may be slight variations in the finished size. ●Composition Cover Outer fabric: Polyester 65% Cotton 35% Filling: Polyester 100% Lining: Polyester 100% Cushion Side fabric: Polyester 100% Filling: Urethane foam Please understand that this is a used item before purchasing!