1. chin pad, support the weight of the chin in the easiest way, material to prevent allergies.2. Adjustable collar, can be adjusted according to individual neck size, strengthen neck muscles to protect cervical spine, reduce pressure.3. The super strong nylon frame is light in material and durable in structure.Specification:Item Type: Neck Support BraceMaterial: Latex, steel wirebattery capacity: 480mAhHow To Use:1. Press the switch for 1.5 seconds, the purple indicator lights up as a cycle (high temperature for 10 minutes, medium temperature for 20 minutes, low temperature for 10 minutes), and then it will automatically shut down.2. After the cycle gears, press the open key again and the red indicator light will turn on for high gear, press again, the blue indicator light will turn on for mid gear, then press again, the green indicator light will turn on for low gear, and long press to shut down.3. The neck heating temperature is 60? for high gear, 50? for middle gear and 40? for low gear.Package List:1 * Neck Brace1 * USB RechargeableIf you have any questions, please feel free to consult our customer service, we will answer for you?3 Heating Gears?: Neck collar brace provides hot compress for your neck, with 3 gears for you to adjust, which help to better relieve neck pain. ?Temporary Pain Relief?: Neck brace helps to relieve neck pain and improves head forward posture through the neck traction, effectively relive muscle soreness. ?Steel Wire Latex?: Neck posture corrector brace is made of steel wire and latex materials, firm and sturdy, which can be used for a long time without damage. ?Ergonomic Design?: Ergonomic design ensures proper cervical alignment and posture, helps lessen neck pain caused by head-down. Perfect companion for people with head-down habits, such as office staffs, game enthusiasts, students, driver.