892400 Hearing Premium Color: Line Cross White x 2 Size: M Price per unit: 3280 yen Even if the surrounding temperature rises, it stops at a certain temperature range, absorbing heat and maintaining a constant temperature. Condensation due to sudden temperature changes does not occur. Because it doesn't get too cold, it can be used with peace of mind by those with sensitive skin, women, and children. ≪Features≫ ・Recommended for heatstroke prevention as it cools the neck ・Can be used all season, reusable and economical ・The cooling material developed by NASA is safe and plant-based ・Uses a special material that changes from liquid to solid when cooled, and can solidify when cooled at a temperature of 22°C or lower or with water ・By making the neck area, which is prone to melting, extra thick (3cm in diameter), it achieves increased cooling sensation and longer cooling time ・Uses a single base color that does not cut off the color in the middle, and adopts reverse printing that does not transfer color to clothes or skin ・Equipped with a window to check the condition inside ≪Specifications≫ Cooling time: Ice water / approx. 20 minutes, Refrigerator / approx. 45 minutes Usage time: Approximately 2-3 hours (when the outside temperature is 25-35 degrees Celsius) ≪Uses≫ ・As a countermeasure against heatstroke in summer ・At work sites, during agricultural work ・On sleepless nights and during fever ・During study, desk work, and business scenes ・At concert venues, during commuting and driving ・Camping, leisure activities such as fishing ・Sports viewing, events such as athletic meets ・Cooling down after sports, etc. ≪Materials≫ TPU (Thermoplastic Polyurethane) P.C.M (Cooling material)