Features: Keep warm and comfortable with this Heating Collar, the perfect solution for chilly days! Made with advanced technology, this self heating neck collar provides a continuous release of warmth, ensuring optimal comfort throughout the day. Suitable for individuals who spend long hours in cold settings or enjoy outdoor activities, such as office workers, constructions workers, and sports enthusiasts. Whether you are braving the winter outdoors or working in a cold office, this heating collar offer warmth and relief for your neck discomfort. Experience the soothing warmth and relaxation with this innovative heating collar say goodbye to cold necks and hello to comfort! Specifications: Material:PCM Color:Red,Blue,Green,White Diameter:Approx.12cm/4.72'' Package Includes: 1x Heating Collar note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.