【Dual-Layer Structure: High-Resilience and Low-Resilience - Balanced Flexibility and Support】 This sleep pillow harmoniously combines the conforming feel of low-resilience foam with the supportive power of high-resilience foam, achieving excellent dual-rebound performance. Upper Layer (Low-Resilience Pillow): Softly cradles the head and neck, providing a relaxing effect. Lower Layer (High-Resilience Pillow): Provides firm support to stabilize the head and neck position, supporting turning and posture. It doesn't sink in even when you turn over, distributing body pressure. High-density urethane prevents deformation, maintaining a comfortable state even after long-term use. 【Ultimate Fit - Comfortable in Any Position】 This neck-friendly pillow uses a dual-rebound effect to naturally adjust to the weight of your head and your sleeping posture. The soft layer distributes pressure, and the firm layer firmly supports the body, allowing you to sleep comfortably in any position. 【Ergonomic Design - Comfortable Support】 The three-dimensional structure is designed to gently support the head, neck, and shoulders. The support of different layers maintains a natural position, leading to a more relaxed posture. It comfortably fits the lines of the face, neck, and shoulders, and allows for smooth turning. Make your daily sleep more comfortable! 【Choose Your Preferred Height】 2-WAY design with selectable heights! With 9cm and 13cm, you can arrange it according to your preference, and experience different sensations by flipping the pillow over. Perfect for side sleepers. Experience a more relaxed sleep at a height that suits you. 【Fall Asleep in Seconds - Achieve Pressure-Free Comfort】 The upper layer of the pillow uses ultra-fine particle material, and special nanotechnology achieves a fluffy softness like sleeping on a cloud. It provides a comfortable sleep without putting unnecessary pressure on the ears and face, whether you sleep on your back or side. Delivered in simple packaging.