Neck Ring Ice Neck Cool Ring 24°C Freezing Neck Cooling Tube Neck Hanging Brand new, unused. 【Product Specifications】 ① Material: Outer is TPU (heat resistance -60°C to 80°C, self-extinguishing), contents are PCM (temperature control component) ② Size: 17x18cm, inner diameter 12.5cm, L neck circumference 37-40cm ③ Weight: 150g 【Safe to use with excellent materials】 Made with excellent antibacterial properties and harmless materials (T.P.U), so people with sensitive skin can use it with peace of mind, and it can be used repeatedly. 【Product Features】 This product absorbs and releases heat while repeatedly freezing and melting (solid-liquid) depending on the temperature environment. It can be naturally cooled just by leaving it in a place below room temperature of 24°C. Refrigerator/Freezer: Freezes in about 20 minutes. Cold water/Ice water: Freezes in about 30 minutes. Duration (in a 24°C environment) is about 1 hour to 1 hour 30 minutes. Also, it does not condense, so no water droplets form. It is very comfortable to wear! 【How to use】 After freezing in the refrigerator, you can use it in direct contact with your skin. If you put ordinary water in the refrigerator and take it out, it will feel very cold if you use it in direct contact with your skin! The ice neck ring is made with a special liquid that comes into direct contact with the skin! 【Active in various situations】 It's cool not only outdoors for fireworks, excursions, summer festivals, sports days, etc., but also for studying for exams, housework, and when you want to concentrate! 26-22/1280/..