The hollow design lifts your body to stabilize and align your spine. An ideal sitting posture for a long time without causing any pain to your back and lower body. It will not flatten and stay soft after long-term use. The pillow has heat Responsive and can sense body temperature to fit the body curve to provide the best comfort and relieve pain. Feature: Please note: other accessories are not included.100% new qualityColor: rose red, brown, navy blue, grayStyle: male, femaleSize: 43*36*7cmCushion core: slow rebound memory foam Features 1. The highest quality 100% memory foam, slow rebound and zero pressure, will not flatten like standard foam pads over time.2. Central hollow design. The innovative hollow ventilation space extends from the tailbone to the genital area, providing relief for hemorrhoids.3. There is a groove in the front, which is suitable for the buttocks, protects the tailbone and shapes the buttocks for daily use.4. Sitting on the memory foam will give you a very soft experience. It is good for hemorrhoids treatment and soothes the tailbone.5. Very suitable for any chair, car seat, truck seat, wheelchair, airplane seat. Correct sitting posture. SPECIFICATIONS: is_customized:NoUse:SeatUnpick and Wash:Removable and WashableType:CusionSize:44*41*7.5cmShape:RoundPattern Type:SolidPattern:solidMaterial:Suede FabricMaterial:Polyester / CottonFilling:Memory Foam Remarks: 1. Manual measurement tolerance is 2-5g. Please don't mind your replacement. 2. Due to the difference between different monitors, the image may not reflect the actual color of the item. thank you very much 3. SKU color is product color Pack Included: 1 *Slow rebound seat cushion