【Cool Cooling Ring】 Cooling Ring for Kids S Heatstroke Prevention Neck Cooler ※This item is also listed on other sites, so please comment to confirm availability before purchasing. Color: Yellow ※Other colors are also available on separate pages. Reusable, so it's economical! It doesn't get too cold, providing a comfortable, cool temperature, making it comfortable for people with sensitivity to cold and children. ◆S Size Material: External TPU, Internal PCM Weight: Approximately 110g Size: Inner diameter approx. 10.5cm / Thickness approx. 2cm / Inner circumference approx. 33cm / Melting point: 28℃ 【How to Use】 Solidifies in about 5 minutes in the freezer, about 20 minutes in the refrigerator, and about 15 minutes in ice water. Unlike cooling towels and hand towels, it doesn't condense and won't get your clothes wet! Uses PCM material with a smooth temperature adjustment function. PCM material was developed to protect astronauts from rapid temperature changes in space, and has the characteristic of repeatedly releasing and absorbing heat and cold. It keeps you cool for 4-6 hours indoors and 3-5 hours outdoors. Cool Ring Cooling Cooling Sensation Neck Cooler Ice Neck Cooling Heatstroke Prevention Neck Fan Sports Viewing Fireworks Display Unisex Cooling Goods Heatstroke Prevention Frosty Ring Ice Ring (54-8)