Brand new, unused S size x 2 There may be some slight dents on the surface, but there is no problem with use! [Insect repellent function] Unlike anything on the market before, we have developed a cool neck ring that not only provides a cooling effect to prevent heatstroke but also incorporates 100% plant-derived insect repellent ingredients. It has a scent similar to menthol, making it safe for children to use. [Semi-permanent reusable] Our cool neck ring uses the latest "PCM material" and freezes naturally below 28 degrees Celsius. When the temperature exceeds 28 degrees Celsius, it absorbs heat, providing a cooling sensation and a comfortable feeling. Once completely melted, it can be cooled in cold water or a refrigerator, freezing in a short time, making it eco-friendly and semi-permanently usable.