Specification: Color:As picture shown Material: Premium fabric Extend Size(one size): approx. 56*10cm/22*3.9Inch Weight: 75g Feature: -Premium material with self heating function, which is soft and provides more supports for the neck while limiting mobility, bring warmth to relieve pain and pressure in the spine. -Breathable mesh cloth, good skin-friendly properties can keep you comfortable during long-term use. -With the hook and loop closure, you can adjust the tightness freely. -Effectively relieve stiffness in the neck or shoulders, to restore the natural cervical curve, to relieve headache and migraine or to support spinal decompression. -Useful for post-operative rehabilitation and injury support. Besides, widely used when you're sleeping in the home, travelling on planes, working in the office. Note: 1.Please understand there may have minor error due to manual measurement. 2.Due to the screen display, the color of the product may differ slightly from the picture. 3.If you have any questions about our product, just feel free to contact us.Widely Used: Useful for post-operative rehabilitation and injury support. Besides, it can be used when you're sleeping in the home, travelling on planes, working in the office. It can keep the posture aligned and to avoid discomfort. Adjustable Design: With the hook and loop closure, you can adjust the tightness freely. One size fits for most of men, women, youth, elderly, boys, girls. More suitable for travel, office, playing games, watching movies and wearing while sleeping. Breathable&Comfortable: Mesh cloth is breathable, and can keep the neck cool and dry through air circulation. Good skin-friendly properties can keep you comfortable during long-term use. Premium Material: Made of premium fabric, which is soft and provides more supports for the neck while limiting mobility, bring warmth to relieve pain and pressure in the spine. Relief Pain& Pressure: The neck brace can produce support, with self heating function, effectively relieve stiffness in the neck or shoulders, to restore the natural cervical curve, to relieve headache and migraine or to support spinal decompression.Note: This is the self-heating product, in order not to hurt your skin, we recommend to use this item for aprox.15 minutes per time.