Ammeltz Yoko Yoko Air-Activated Body Warmer -Neck & ShoulderProduct HighlightReady to use. Stick directly to the skin.Natural ingredients. It reacts with the air and generates natural heat.It provides a stable and safe temperature (40 degrees) for approximately 8 hoursProduct DescriptionIdeal for use in cold weather? outdoor sports? skiing? etc.Thin and discreetOdourlessDisposable*This product is not intended for medical purposes.