When you lie on your back or side, the neck contour design can still perfectly support and align your head, neck, shoulders and back, providing your body with natural spine support and scientific cervical traction, effectively relieving shoulder pressure. Made of high-density slow rebound memory foam, breathable like latex, 5-s rebound. High-quality memory foam provides better air flow and amazing stereo support, adjusting your body to a comfortable state and giving you a healthy, quality sleep! Memory pillows can also maintain their shape and firmness for long-term use.