If you spend +8 hours a day in a seated position, this comfortable pad is just right for you. It provides additional support you need to maintain good posture and the natural curve of the spine. By evenly distributing weight of the body, it offloading pressure on the spinal discs. The ergonomic design helps to increase blood flow, prevents pain in the lower back, helps with muscle fatigue, leg tightness, hamstring. It allows you to sit upright naturally without pain^ Measuring 17.7x 13.8x 2.8, the butt support pillow comes with a removable and breathable black mesh cover, that provides great air circulation and allows you to sit without feeling hot or sweaty. The non-slip rubber base of the pad securely keeps it in place. The cushion insert is made from 100% Memory Foam that conforms to your individual shape and helps to avoid pressure. The handle is attached to the side of the pillow, making it easy to take it with you where you are^ This ergonomic seat cushion nicely fits most office chairs. U-shaped contoured design rests your tailbone, avoiding compression. This pillow is also a good option to consider, if you move around a lot. Take it in your car, on a plane or a train. Great for office use, frequent travelers, sporting events and pregnancy. This cushion will help to reduce neck, shoulder, and low back pain. Perfect alternative to donut and hemorrhoid pillows. Best for Adults 150 - 220 lbs^ This thick pad repeats the anatomical contours of your body, supports your lumbar area, and lessens the pressure on your back. It avoids the occurrence and progression of spine problems and ensures health. Moreover, it can be used to increase the height of any seat. This therapeutic lift cushion provides additional comfort when driving long distances (truckers, drivers) and rest if sitting in slow-moving traffic. Note:The pillow is supportive and Firm, Not Soft^ The orthopedic seat cushion should be firm enough. Our office chair cushion is a perfect mix of firmness and comfort. However, please allow yourself 1-3 weeks to adapt to a new feeling while sitting. Stay healthy with 5 Stars United sciatica pillow for sitting ^