【Ergonomic 3D Design】 The KOJIHOMU pillow has an arched design that perfectly fits the curve of your neck. This perfectly fills the gap between your back and the pillow. This pillow has a concave hollow design that wraps around your head while firmly supporting it. It does not put pressure on the head, providing a sleeping experience as if there were no pressure. You won't feel any pressure on the sides of your head or ears when sleeping on your side. 【Easy to Turn Over & Comfortable Side Sleeping】 This pillow is designed with high sides, so even when you sleep on your side, your head will naturally lift up, and your body's center of gravity will be straight. This feature allows your neck, shoulders, and head to remain stable without being forced into an unnatural posture. In addition, because it has moderate firmness and size, it firmly supports your head and prevents your posture from collapsing. Also, it does not easily slip off the pillow even when you turn over, improving your peace of mind during sleep. 【Adjustable to Your Preferred Height】 Considering the various body types of our customers, our sleep pillow pillow pillow has two levels of height (8cm on the low side, 12cm on the high side). Both those who prefer a higher pillow and those who prefer a lower pillow can use it. Customers can freely switch between a low pillow and a high pillow to suit their body type. 【Double Protection & Washable Comfortable Pillowcase】 The KOJIHOMU sleep pillow uses a soft two-layer cover to firmly protect the pillow itself. An inner cover is included, making it difficult to get dirty and preventing the deterioration of the urethane. You can remove the outer cover after opening the zipper and wash it. You can always use it comfortably and cleanly. The pillowcase has excellent elasticity and flexibility, so it fits perfectly to the pillow itself. It is also breathable and gentle on the skin. Note: The pillow itself cannot be washed. Size 65 x 37 x 8-12cm #Memory Foam Pillow