It is said that people turn over in their sleep 20 to 30 times a night. This is a natural movement that keeps the flow of bodily fluids constant and prevents stagnation. Most people who suffer from stiffness have stiff muscles that cause poor blood circulation. To be able to turn over in their sleep, a pillow with a firm, high-resilience feel is suitable. In addition, the four inner fillings can be adjusted to your preferred height and shape. In summer, the pillow is breathable, keeping the temperature and humidity comfortable, and in winter, by covering it with your preferred cover, it has excellent air insulation and keeps you warm.