Size: Neck circumference approx. 340mm, weight approx. 120g Ice Neck Ring 28℃ Natural Freezing Reusable ┈┈┈┈┈┈┈┈┈┈ ✨️Other products are available at #tee shop ✨️ ○ Immediate purchase and late-night/early-morning purchases are welcome!!! ○ Free shipping ○ No shipping on weekends and holidays ○ Since there are similar products, please check the actual photos or the description for the product condition ( . .)" ○ Please ask any questions in the comments!! ○ Please read the profile before purchasing m(*_ _)m ┈┈┈┈┈┈┈┈┈┈ NASA material PCM 80% increase! The latest cool neck ring that further reflects customer feedback We have redeveloped the evolved version. Even in the hot midsummer season, the neck ring is a neck cooling item! An ice neck ring for the neck made to freeze in a space below 28 degrees, it cools faster than water or other cooling goods (5-20 minutes in the freezer or ice water) and the effect lasts longer. Compared to ice, there is less risk of overcooling or frostbite, and it is an ice neck ring that can be used safely. Usable time is approximately 90-120 minutes between 30 and 35℃. It doesn't condense even after time passes, so you don't have to worry about your clothes or hair getting wet with water droplets. Even if the contents of the cool ring liquefy, it can be frozen just by placing it in a cool space with air conditioning. So, it is friendly to the environment and your wallet. Size: Neck circumference approx. 340mm, weight approx. 120g, unisex Neck hanging Heat stroke prevention Reusable Heat measures Cooling goods Cooling tube Cooling sensation Commuting to work or school Outdoor activities Festivals Mountain climbing When wearing a mask Sports viewing Athletic meet Fireworks display Unisex White 5-9999