Orthotic knee braces provide great support and can dramatically improve spinal alignment, helping to relieve back, hips, legs, knees, arthritis and sciatica, as well as improving blood circulation in both legs. Elastic Band Design: The leg pillow maintains the best sleeping posture all night long, and it won't suddenly fall or slip. Use the right method to relieve pain in the back, hips, knees and ankles. Simply place it between the thighs or under the knees to help relieve your specific pain. It can be used as a knee retractor during pregnancy or after recovery.It is also convenient to use while traveling. This memory foam cotton knee pillow has a washable cover for easy cleaning.Vented Memory Foam Pillow: Unlike traditional memory foam pillows which are designed to absorb your body heat to compress it, ventilated air holes in the memory foam promote air circulation throughout the night. Note: The data is all measured manually, please allow 1 error at 3cm, due to the difference in light and display, there will be a certain color difference, the actual object received shall prevail.