RELIEVE NECK AND BACK PAIN: The ergonomic contoured design perfectly supports and immobilizes the fit for your head, neck, and shoulders. Grooves conform to the contours of the head and neck to support your head and neck, reduce pressure on your cervical spine and vertebrae, relieve neck and shoulder pain and discomfort, allowing you to sleep faster and deeper and improve your sleep quality. ERGONOMIC CONTOUR DESIGN: This pillow is designed with scientific ergonomic contours, perfect for supine, side, prone, and other various sleeping needs. Provides support for your sleeping habits. DOUBLE INNER AND OUTER EAR PROTECTION: The inner and outer covers of the pillow are made of 100% polyester fiber. This pillow has a breathable inner cover, which effectively extends the life of the memory foam core. The outer cover is skin-friendly, soft, and breathable, removable and machine washable. Do not wash the memory foam core, but store it in a ventilated place away from sunlight; store the pillow in a cool, dry place away from direct sunlight. HIGH-QUALITY MEMORY FOAM PILLOW: This pillow is made of high-quality, high-density memory foam. The height of the pillow varies depending on sleeping position, head weight and size, body weight and size, shoulder width (side sleepers), and remains at the most comfortable level. They are soft and supportive, allowing you to sleep comfortably and protect your neck and shoulders. PRODUCT SIZE: style 1: L60*W34*H13cm; Style 2: L60*W43*H12cm; Style 3: L60*W34*H11cm(high side)/H6cm(low side).