ventilated support plate to increase cool and comfort.Two pieces of -adhesive support plate can adjust height freely to between chin and neck .Double buckle structure to the fixedeffect.White is not easy to dirty and can be washed with water.Indication: perfect use for pervebtion and auxiliary treatment of cervical vertebra syndrome,such as cervical spondylosis and cervical muscle strain etc and neck support for cervical spondylosis rehabilitation after surgery.Color: WhiteMaterial: plasticProduct size Your neck size:S 37-42cm / 14.6-16.5inchNote: Dear ,the can be free adjust,if your neck size is less than 37cm(14.6inch),you can the S size, thanks Item Type: Braces & SupportsEffect: Bone Careneck for man women lady chird: neck support for health carePackage Contents:1 * Neck SupportOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.