1. 100% PRIMIUM MEMORY FOAM: This neck pillow uses high-quality slow rebound memory foam for soft, comfortable and durable support. Unlike normal bed pillows, it is designed in a butterfly shape with four zones for neck, head, side sleep and arm support, which can efficiently support and relax your shoulder and neck. 2. UPGRADED ERGONOMIC CURVE: Compared with other neck support pillows, this upgraded cervical pillow has a thicker neck contour and a larger shoulder area. It conforms to the natural curvature of neck and shoulder to support and relax the cervical spine more efficiently. Fall asleep faster and wake refreshed. 3. BREATHABLE AND COMFORTABLE: Made from premium memory foam with a skin-friendly pillowcase, the cover is breathable, silky and cool. Super soft and comfortable. 4. 2 HEIGHTS AND ARMREST DESIGN: The pillow features two heights for you to choose from, 10 cm and 14 cm. Back sleepers with cervical problems can sleep on the higher side for better support of the head and cervical. Other back/side sleepers can sleep on the lower side. Use scenarios - Back sleepers with cervical problems can use the higher 14 cm side for better head and cervical support. - Back or side sleepers can use the lower 10 cm side for comfortable alignment. - Anyone seeking a breathable, cool pillow with a skin-friendly cover for comfortable rest and neck/shoulder relief.