Safe to use with excellent materials: Made with excellent antibacterial properties and harmless material (T.P.U), it can be used with peace of mind even by those with sensitive skin, and can be used repeatedly. Product Features: This product absorbs and emits 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 with a room temperature of 24°C or lower. Refrigerator/Freezer: Freezes in about 20 minutes. Cold water/Ice water: Freezes in about 30 minutes. Duration (in an environment of 24°C) is about 1 hour to 1 hour and 30 minutes. Also, it does not condense, so no water droplets will 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 when used in direct contact with the skin! The ice neck ring is made with a special liquid that comes into direct contact with the skin! Active in various scenes: It's cool outdoors, such as fireworks displays, picnics, summer festivals, and sports days, as well as during exam studies, housework, and when you want to concentrate! Neck Ring Ice Neck Cool Ring 24°C Freeze Neck Cooling Tube Neck Hanging Neck Cool Ring Neck Cooling Tube Cooling Ring Cooling Goods Cool Icing Cooling Ring Cooling Scarf Cool Ice Neck Band Antipyretic Reusable Heatstroke Prevention (Pink, M) Neck Ring Ice Neck Cool Ring 24°C Freeze Neck Cooling Tube Neck Hanging Neck Cool Ring Neck Cooling Tube Cooling Ring Cooling Goods Cool Icing Cooling Ring Cooling Scarf Cool Ice Neck Band Antipyretic Reusable Heatstroke Prevention (M) Sent in simple packaging. The actual product photos are on the second page. 31-441000