[Premium Donut Seat Cushion] The size of the donut pillow is 17.71"x16.14"x3.14". The surface layer is made of comfortable and breathable fabric, and the core material is memory foam. The memory foam inner core has sufficient support and elasticity , makes you more comfortable, can still maintain its shape after multiple uses, brings you a sense of comfort that ordinary cushions cannot provide, and takes better care of your body. [Advanced Ergonomic Design] The donut chair cushion adopts ergonomically shaped cutouts, which can reduce hip pressure and effectively relieve tailbone pressure, thereby reducing hemorrhoid pain and relieving discomfort caused by sitting for long periods of time. Ideal for pregnant women, post-surgery recovery, office workers and others. If you give this as a gift to a family member, friend, boss, client or co-worker, they will all appreciate the care you put into choosing the gift. [Portable Seat Cushion] The donut seat cushion can be used anywhere, taken with you, and used on any type of chair, such as wheelchairs, office chairs, airplane seats, car seats, game stands, dining chairs, etc. You dont have to worry about uncomfortable seats when you have cushions to sit comfortably on a variety of seats. [Humanized Design] The donut seat cushion plush velvet cover is removable and machine washable, equipped with smooth zippers for easy removal and cleaning. If you are a hardworking and neat person, cleaning your donut mat won't cause you any trouble. The bottom of the donut cushion has a special anti-slip design to ensure the cushion stays in place. Even using a donut mat on smooth floors will add extra comfort. [COMFORTABLE GIFT] The donut chair cushions are both soft and breathable, providing good support and dent resistance. If you give it as a gift to your family, friends, boss, clients and colleagues, they will love it. This donut seat cushion is ideal for people with special needs after surgery, pregnant women, the elderly, children who often find their seats uncomfortable, and office workers. Donut mats are ideal for birthday gifts, Mother's Day gifts, Christmas gifts and Valentine's Day gifts.