Package Contents: 1 Seat Cushion,Material: Memory Foam,Product Dimensions : 44cm x 34cm 6cm,Pure Memory Foam and Heat Responsive Technology: Our chair cushion combines pure memory foam and heat responsive technology to improve your posture and keeps you supported while sitting for long periods. Soft yet firm, our office chair cushion adapts to the contours of your body to create a truly customized fit,Pain Relief for Back, Legs, Hips, and Sciatica: Designed to provide comfort by alleviating pressure on the lower back, waist, hips, and thighs. Our office chair cushion also helps relieve sciatica symptoms, allowing you to power through your day. Its curve design minimizes the pressure that other chair pillows can cause to improve blood circulation,Ergonomic "U" Shaped Cutout for Tailbone Pressure Relief: Our tailbone saving chair pad helps maintain healthy posture by reducing pressure and fighting fatigue.