3D mesh cushion The surface is made of breathable and non-clogged mesh fabric, feels soft and delicate, wrinkle-free. The left and right side of the inner layer is filled with soft pearl cotton to close the gap between the waist to provide a cozy and comfortable sleeping environment. Adjustable Height - There is a small pillow in the middle of this pillow. The center piece is filled with a buckwheat husk to provide strong lumbar support and improve your sleeping posture. The small pillow can fill the gaps between the lumbar spine and the bed. You can use them with or without them. This way you can adjust the height of the moon cushion. materials Improved triangular wedge pillow that flattens out quickly and does not provide adequate support, this 3D air mesh back pillow with elastic fillings adapts to your body without deformation, perfect for side, Belly or belly sleeper. Multifunctional lumbar pillow - our lumbar pillow has many designs, the middle and sides are slightly hard. Sleep is near the lumbar spine, there is no space between the waist so you can easily fall asleep to sleep. Can be well adapted to the lumbar spine, reduces back pain and improves the quality of sleep. : easy to care for and machine washable. It is the best gift for your friends who have back pain. Many people use our lumbar pillows to help maintain their lumbar spine and relieve back pain. If you have any questions, please contact us. 1. When you sleep, it sticks to your lumbar spine and there is no gap between your hips to help ease your back pain. The middle is slightly hard and the sides are slightly soft. It is useful to our back pain to alleviate, improve your sleep quality. 2. Ergonomic design: The triangular, wedge-shaped pillow flattens quickly and does not offer enough support. This 3D air mesh lumbar pillow has an elastic filling contour that adapts to the curve of the body and gives the waist a suitable support point. 3. Easy to clean: you only have to put it in the washing machine to keep it clean.