Color Black Size 1 seat cushion Memory foam filling material Semi-circular shape < p>About this item Velvet 1.DESIGNED FOR BACK PAIN & Sciatica Relief: The ergonomic U-shape design provides support and comfort while reducing pressure on the tailbone, and contours and promotes healthy posture. Promotes recovery from lower back problems, helps relieve most sitting pains due to sciatica, herniated discs, tailbone injuries, pregnancy, hip pain and hemorrhoids. Our seat cushion is designed to help relieve pain while sitting, but it may not work in all conditions or completely eliminate all pain symptoms. Memory foam is 100% pure with no additives and can be used to improve poor posture and relieve leg pain while driving or sitting for long periods of time, improving your comfort while maintaining its density. NON-SLIP rubber bottom, handle designed for easy transport and machine, washable zippered velor cover for easy cleaning. office chair, desk chair, kitchen, car seat, airplane, rocking