Material: neck heating pad made of environmentally friendly ABS + polyester + cotton. The outer flannel can be washed. There are 3 different temperatures to choose from. It can be warmed up and reused quickly. It can relieve the muscles in the office or at home. Sore and can relax and concentrate for a day . Size: The neck heating pad has a size of 57 cm * 43 cm * 2 cm and is ergonomically designed to fit your neck and shoulders, relax your hands and offer maximum comfort. Is the best choice to relax the muscles . Overheating protection: the neck heating pad has an automatic switch-off function of 2 hours, which prevents burns from overheating and provides you with a temperature that is suitable for your body. Auxiliary treatment: The shoulder heating pad is suitable for muscle fatigue in adults. They reduce bruises, pain and stiffness in the shoulders and neck, back, arms, legs, abdomen, etc., increase blood flow, relieve cramps and relax the muscles.