PCM Hot Ring, which keeps you comfortably warm even in the cold winter, with a 49-degree temperature maintenance function. This is a set of two: a dark brown L size and a pink M size. Simply remove the cover and soak the main body in hot water for 10 minutes to maintain the temperature for a long time. Although they are completely unused, the brown one has some stains on the main body after removing it from the cover. Please note that this will not affect usage, as the cover will be put back on. It is said that warming your neck can boost your immunity. How about preparing for the cold winter ahead? - Model: PCM Hot Ring L size - Temperature maintenance: 49 degrees - How to use: Cover can be hand-washed - Size: Suitable size: 36-46cm Thank you for viewing.