Magnetic Neck Protector With Self-heating Support For Neck Protectors With Neck Support Self-heating moxibustion, magnet care, keep warm and comfortable, fit the neck It is suitable for alleviating neck and shoulder fatigue, cervical stiffness, cervical spine stiffening, and cervical cold caused by long-term face to the computer, long-term sitting in the office, incorrect sleeping posture, etc., and it can also be used to keep warm in winter. The protective gear should be used close to the skin. Wearing it for a period of time can produce heat. When the heat is not enough, you can wipe the hot surface with a wet towel According to the ergonomic design, it fits the neck curve and is comfortable to wear Warm fabrics, insulate the cold and dampness, lock in the heat and protect the neck from coldness, warm and comfortable! Product color: black Product specifications: free size (adjustable) product fabric soft fluffy self-adhesive cloth Product size: 52CM10CM (20.5inchx5.5inch)\heating surface 12CMX9CM Maximum width: 14cm/5.51inch Note: Depending on the actual measurement environment and conditions, the size may have errors.