Made of high quality OK fabric + tourmaline + self-heating strap, lightweight, soft, skin-friendly, breathable, comfortable, warm and durable, very easy to wear. Size: 45 x 9.5cm, one size fits most men and women. This will greatly help the self-heating magnet to work properly and provide enough warmth for the neck. It is very helpful in relieving neck tension and pain caused by common ailments. This can reduce the amount of painkillers you take Tourmaline magnetic neck brace can improve local and systemic blood circulation, promote fracture healing and neck strength, relieve back, shoulder and neck pain, accelerate soft tissue healing, improve joint flexibility and increase ductility of collagen tissue. For minor injuries, sprains, sprains caused by sports or arthritis. Perfect fit, very comfortable to wear, relieves acute pain, muscle spasms, chronic stiffness and head tension Small enough to fit in a purse, you can easily access it when you need it wherever you go. A 20-minute safety test is recommended, with an optimal time of 45-60 minutes per day