Thank you for viewing. I purchased this but didn't have many opportunities to use it, so I've been storing it. 【Gel Cushion Highlights】 ■ Moderate firmness... It distributes the pressure from your weight, providing a stable and comfortable sitting experience. Recommended for those who find cushions that are too soft unstable, or too hard and cause their buttocks to hurt. ■ Thin yet minimizes bottoming out... This cushion can be placed without significantly changing the height of your chair. Recommended for those who find thin cushions feel hard because their buttocks quickly touch the chair. ■ Breathable cushion... The honeycomb structure gel reduces the contact surface with the body. It also has a structure with many voids. Size: Diameter = 38cm, Thickness = 3cm Color: Gray Material: Side fabric = 100% polyester