[Comfortable Gel Memory Foam Seat Cushion] DR.DREAM gel coccyx seat cushion is made from premium quality memory foam which is super comfortale to support your back well, suitable to long sitting. There is a side handle for easy carrying, and a machine washable zipper velvet cover for easy cleaning. [Great Support and Relieve Tailbone Pain] The ergonomic designed seat cushion provides good support, reduce pressure on the coccyx, supports recovery from lower back pain, herniated discs, tailbone injuries, sciatica and other spinal issues. [Cooling and Breathable] DR.DREAM seat cushion is made with gel layer on it, it's cooling and comfortable for long sitting especially in summer. And the cushion case is made from cotton linen, which is soft and super breathable, provides you a more comfortable sitting. [Large Size] The seat cushion size is 18.3x 13.98x 2.78inches, U shaped, bigger and thicker than normal seat cushion, suitable to all tyes of figures. [Used Anywhere] DR.DREAM orthopedic seat cushion is fit to almost chairs perfectly with non-slip rubber bottom, the built-in handle makes it easy to transport. The cushion can be used in office chairs, home desk chairs, car seat, wheelchairs, truck drive, also can be taken to train or plane. DR.DREAM pressure relief seat cushion is great for people who sit for long periods of time, people with tailbone pain, and ergonomic design promotes healthy posture, improves circulation, and relieves spinal pressure. High density cooling gel provides a certified decrease in body temperature for maximum comfort during extended periods of sitting. Machine-Washable Cover is easy to clean and carrying strap makes it easy to transport between home, office, car and events.