1. PREMIUM MEMORY FOAMThis memory foam neck pillow is made of highquality slow rebound memory foam, soft, comfortable and durable. Unlike normal bed pillows, this ergonomic pillow is designed in a butterfly shape with 4 areas, including neck, head, side sleep and arm support area, which can efficiently support and relax your shoulder and neck. 2. D ERGONOMIC CURVECompared with other neck support pillows, our upgraded cervical pillow has a thickened neck contour and a larger shoulder area. It conforms perfectly to the natural curvature of the neck and shoulder, to support and relax the cervical spine more efficiently. Fall asleep faster and dream deeper. Wake up feeling refreshed! 3. BREATHABLE COMFORTABLEOur ergonomic cervical sleeping pillow is not only made of premium memory foam, but also comes with a skinfriendly pillowcase, which is breathable, silky and cool. Super soft and comfortable. 4. 2 HEIGHTS AND ARMREST DESIGNAnother unique design of this neck support bed pillow is the 2 heights and armrest design. The two sides have heights of 10cm and 14cm for you to choose. Back sleepers with cervical problems can sleep on the higher side for better support of the head and cervical. The other back/side sleepers can sleep on the lower side.