【No Neck or Shoulder Fatigue】This low-rebound pillow is designed with a central indentation, allowing your head to rest snugly without any gaps. The arched shape of the pillow's underside conforms to your neck and shoulders. When sleeping on your back, simply rest your head on it to maintain a natural curve, preventing stiff necks and promoting proper sleeping posture. 【Easy Side Sleeping】This pillow has raised sides. When sleeping on your side, the height of the edges naturally lifts your head, relieving stress on your neck and shoulders, making it very comfortable. Your center of gravity is aligned, preventing your body from assuming an unnatural position, reducing strain on your cervical spine, providing stability, and making it very easy to sleep. 【Easy to Turn Over】This large pillow is 64cm wide. Its size provides a sense of security, preventing your head from falling off the pillow, allowing for deep sleep. The pillow has a density of 45D, preventing excessive sinking and providing firm support for your head and neck. This makes it easy to turn over and ensures a good night's sleep. 【4-Way Height Adjustment】Includes a 2cm thick cushion for height adjustment. Additionally, there is a 1cm difference in height between the front and back of the pillow, allowing for a total of 4 height adjustments. This high-performance pillow accommodates a wide range of users, from petite individuals to those with a more robust build. 【Supportive Low-Rebound Pillow】This pillow uses low-rebound urethane for a soft, comfortable feel. It has high pressure distribution, evenly distributing the load, resulting in a comfortable sleep. Compared to general low-rebound pillows, it is less likely to flatten and experiences fewer changes in comfort due to temperature, ensuring a consistently good night's sleep.