Specifications:Material: Magnet + Self-heating ClothColor: BlackTotal Length: 47.5cm/17.8inchType: Neck BracesFunction: Have Auxiliary Therapy Effect To Bone Hyperplasia, Arthritis, Cervical Pain, Neck Stiffness etcHow To Use:1. Wipe the heat pad with water about 20 mins before use, this will make the hot effect more quickly.2. Put the neck brace support on around your neck, please note the self-heating side should be on the back of your neck.3. Tighten the neck support with the hook and loop as per your comfort standard.Package Include:1 x Neck Brace Support OnlyNote:1. It's suggested to clean with water within 5 minutes.2. If any reddened skin or burning occurs, please do not being panic, these symptoms will disappear after taking off the neck brace.3. Please do not use it for those who has high fever, bleeding tendency, temperature sensory disturbances and wearing parts of the skin damage, acute soft tissue injury, the body with heart pacemakers and individual allergies.If you have any questions, please feel free to consult our customer service, we will answer for you?Promote Blood Circulation?This neck brace support adopts infrared negative ion tourmaline and special heat sensitive material, built-in permanent life magnet, which can produce negative ions to promote blood circulation, also can improve metabolism, enhance the immunity. ?Breathable Materials?The neck collar is made of self-heating cloth, which is soft to the skin and can breathe naturally while keeping the neck warm. ?Widely Used?Heat therapy neck brace can be used anywhere any time. Ideal for office works, students, teachers, drivers etc. ?Relieve Fatigue and Pain?Promote the new supersedes the old, regulate the nervous system; Has effects of endocrine activation, analgesia, dilation of blood vessels, so as to alleviate the physical local fatigue and pain.