Orthopedic knee braces provide excellent support and can significantly improve spinal alignment, helping to relieve the back, hips, legs, knees, arthritis and sciatica, as well as improving blood circulation in both legs. Elastic Band Design: The leg cushion maintains the best sleeping posture all night long , and it will not 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. Advanced High: High Density Memory Foam: 100% memory foam high quality durable, comfortable for a long time, better than other pillows. It won't flatten out over time. 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 airflow throughout the night.