Self-Heating Neck Guard Features: [Neck Heat Shoulder] Neck heat shoulder self heating accelerates circulation in the shoulder, back, and waist, improves body fatigue, and relieves body pain. Energy conversion occurs when in contact with the skin, and heat is released, making it very suitable for back pain, neck, and shoulders, relieving and relaxing sore muscles. [Safe Shoulder] This is a ball protector that does not require a connection. Wearing it for a period of time on the shoulder can strong and mild heat, penetrating deep into the subcutaneous tissue and promoting circulation. Self heating stimulates physical discomfort, relieves cold and soreness in the shoulders, and relieves shoulder discomfort. [Healthy Shoulder and Neck] Three layer fabric for warmth and locking. The outer layer is made of soft cotton, providing a comfortable . The middle layer has a weaving function that can lock in temperature. There is a heating point on the inner layer, which can keep the tablet warm and cold. [Ergonomic Design] 360 full shoulder protection, suitable for the neck, shoulders, and entire back area, fully wrapped and front, equipped with heating design, providing complete shoulder care and better care. Equipped with a self heating hood, it can adapt to shoulder curves and provide all-round protection for the shoulders. The is for the elderly, family, and who have secondary health problems such as scapular periarthritis, shoulder and back pain, and discomfort in daily life. This will be the perfect gift for the person you love, especially for women, , wives, or girlfriends. Product Description: packing including 1*Self-Heating Neck Guard