[Official]KANUDA CV4 Traction Pillow Double Set, Memory Foam Pillow, Cervical Pillow(Medium) -Made in Korea- This product is a safe and reliable product directly provided by KANUDAKOREA. The highly dense dual core supports the neck and keeps the airway open for a comfortable and stable breathing during sleep. Even though you lie on your side, the pillow keeps your spine and head straight and reduces the pressure on your shoulder for a deep and sound sleep. KANUDA NAP is designed to massage the nape of the neck. With a saw-tooth shape, it has massage effects, relaxing the muscles in the nape of the neck. KANUDA NAP helps you relaxed and stay healthy with soft massage effects.