1. Material: memory foam 2. Relieve cervical pain and stiffness 3. Curved support, two-way stretch, absorb pressure 4. Fits the head and neck to provide support 5. Maintain a healthy and natural curvature of the cervical spine, and keep the spine straight and not curved when sleeping on the side 6. The memory foam absorbs human body pressure and adjusts the posture to the most comfortable state 7. Metal zipper, smooth, easy to pull and more durable 8. Skin-friendly, comfortable and softer 9. Size: 30x50x10 cm,62x34x12x6cm 10. Weight: about 650g，950g
