Healthy Sleep Starts with Effective Ergonomic Cervical Pillow - Butterfly neck memory pillow, using the neck raised design and head design to form a height difference to fit the physiological curve of the cervical spine, hollow and seamless fit to support the back of the head, so that the whole body spine in its natural position, minimize the pressure on the cervical vertebrae, and long-term use can reduce neck and shoulder pain and stiffness.Different Sleep Height Available on Both Sides - One side of the pillow is 3.54 inch high and the other side is 5.51 inch high. These two heights are designed for back and side sleepers. Back sleeper can choose the 3.54 inch height and side sleepers can choose the 5.51 inch height. Whichever position you choose, it will support your head and cervical spine well and keep your neck in line with the rest of your body.All-round Release of Neck and Shoulder Stress - This innovative butterfly design pillow features 5 uniquely contoured zones for total shoulder, head and cervical spine release and relaxation. The 5 zones are: Head Support Zone, Cervical Support Zone, Shoulder Relaxation Zone, Arm Support Zone and Side Support Zone. Even sleeping on your stomach allows your arms to relax, unlike traditional pillows that have no place to put your arms when you sleep on your stomach.High Quality Memory Foam Pillow with Removable Case - Pillow core is dense and balanced to support the head and cervical vertebrae with good softness. No deformation or collapse after long time use. No odor, breathable, slow rebound. The pillow case is removable with a zipper and machine washable, so you can always keep your pillowcase clean and smelling fresh.Lifetime Warranty & Reliable Customer Care - Our ultimate goal is consumer satisfaction. We offer LIFETIME WARRANTY including after-sales team who respond 24/7 online, replacement or 30 days full refund. If there is any problem or suggestions with the ergonomic cervical pillow, please find us on Amazon.