Ergonomic Memory Foam & PU Leather CoverSlow rebound memory foam is a high density, high level, physical therapy memory foam. it is heat sensitive, slow rebound foam, odorless and does not flatten overtime like others. Washable and breathable PU leather cover for comfort on your road trip, easy to clean. Ergonomic Design for BackacheDo you feel very tired and have the lower back pain? after sitting for a long time? The memory foam back cushion simulates the human body's S-curve, fits your lower back perfectly, helps you relieve back pain and correct your sitting posture. High Quality and Guarantee Unlike many lumbar pillows that use gel, layers, and other ineffective materials, our memory foam pillows use thick, high-density memory foam that holds its shape. In memory foam, it is normal for the cushions to become harder at low temperatures. The softness of the cushion will be adjusted according to the temperature of the user or the environment. Wide Range ApplicationWashable and breathable mesh cover for great comfort during your road trip, this Ergonomic chair cushion is suitable for office chairs, car seats, wheelchairs, any bus, airplane or train seats or seats. What's more: This pillow could be a special gift to your Family/Friends/Co-Works in Festivals Season like Christmas/New Year.