＊ New, Unused ＊ Immediate purchase welcome, silent purchase OK ＊ Depending on the product, 　we may change the shipping method from Rakuraku Mercari Bin ↔️ Yuuyu Mercari Bin. Please understand. 　We will ship by either method. ＊ Welcome to bulk purchases, feel free to comment #miii Recommended Products -------✨Product Description✨------- 28℃ Cool Ring Cool Band Neck Cooler Ice Neck Ring Running Instant Cooling Cooling Ring Neck Ring Cooling Cool Refreshing Heatstroke Prevention Cold Feeling Goods Neck Hanging Cooling (White, M size) 【Size】M size has an inner diameter of 10cm, a thickness of about 2cm, and an inner circumference of about 34cm. Neck circumference guide 30-37cm. 【High-quality material, refreshing and no condensation】This cool neck ring uses the latest "PCM material". General substances rise with the surrounding humidity, but PCM stops at a constant temperature even if the surrounding temperature rises, absorbing heat and maintaining a constant temperature. Also, it does not condense, so it does not wet your clothes during use and feels refreshing. The cool neck ring freezes naturally below 28℃ and is an item that can be used repeatedly anywhere, indoors or outdoors. 【Easy to use, long-lasting cooling】 You can use this cool neck ring just by putting it around your neck. In addition, there is a major artery in the neck, and cooling this part can cool the blood flowing throughout the body, so it can effectively cool the whole body and prevent heatstroke. Cooling maintenance time: 15-20 minutes in the freezer or refrigerator, about 20 minutes in ice water or cold water! It can be used for 60-120 minutes based on an outside temperature of 25~40℃. @M90Y21.58