JarryStart 18.5" x 16.5" Extra Large Memory Foam Cushion, Tailbone Pain Relief Cushion for Long Sitting Soft Hip Support, Breathable X Large Donut Pillow Desk Chair Cushion for Office, Home, Driving

["[Extra Large and Ergonomic Design]: Our seat cushion is designed to provide comfort seating for sedentary people, cradle your thighs and hips. The extra large size (18.5*16.5*4 Inches) provides unmatched comfort during long sitting, allowing you to focus on your work without discomfort.","[Ergonomic Zones and Pressure Relief]: This chair cushions Featuring scientifically designed zones like sit bone contours, sculpted leg channels and a pressure relief cutout, this seat cushion support and comfort while reducing pressure on your lower back, waist, and hips, helps to improve your posture.","[Premium Memory Foam]: Our office chair seat cushion is made of 100% pure memory foam, soft, firm and support, ergonomic shaped hollow design for superior comfort, breathable, effectively support the coccyx, relieve the hip pressure caused by sitting for long periods.","[Easy to Clean and Non-Slip]: This office chair cushion with a removable and machine-washable cover, making it easy to maintain hygiene, also with non-slip rubber bottom and retaining strap ensures optimal seat cushion position and prevents sliding, and with handle for easy carrying around.","[Versatile Use]: This seat cushion brings comfort & support to office, driving, wheelchair or else. It's a versatile cushion that covers car seat cushions, office chair cushions, dining chair cushions, and more to give you ergonomic support wherever you need it, say goodbye to discomfort chair, avoid back pains and numb legs."]