※The product is pink. This is a cool and comfortable neck cooler that will be a great help in the hot season. It's for adults! The part that touches the neck has been increased by 27%, and the cooling duration has been extended. This is an eco-friendly, reusable item that is perfect for preventing heatstroke. 【Developed by Astronauts! Contains Special Cooling Material (PCM)】 This neck cooler uses a **special cooling material (PCM: Phase Change Material)** developed to protect astronauts from extreme environments. It freezes naturally below 28°C and maintains the optimal temperature for a long time. 【27% More Cooling! Long-lasting Cooling】 By increasing the part that touches the neck by 27%, the cooling duration has been extended. You can cool down your neck and spend a comfortable day even on hot days. 【Eco-Friendly & Economical, Reusable】 Even if the coolness wears off, you can use it again and again by cooling it in water or a refrigerator. It's eco-friendly and economical, so you can relax this summer. 【Easy to Wear & Selectable Cooling Methods】 You can easily get a cooling sensation just by putting it around your neck. It cools automatically if the temperature is below 28°C. If you want to cool it quickly, you can cool it in the freezer for about 20 minutes, or in ice water or cold water for about 30 minutes. 【Usable in Various Scenes】: Lightweight design of just under 170g (including packaging), best size (approx. 340mm) achieved after numerous adjustments to the neck circumference, usable by people of all ages and genders, can also be used for some pets, useful in various situations such as outdoor activities like hiking, camping, and fishing, as well as office work, sports, training, long-distance travel, or even as a present! Lasts for approximately 1 hour 30 minutes to 7 hours (in an environment of 28°C)! 【About Cooling Methods and Duration】 Automatic Cooling: Cools automatically if the temperature is below 28°C (natural freezing). If you want to cool it quickly: Cooling time in the freezer: about 20 minutes Cooling time in ice water or cold water: about 30 minutes Duration: Approximately 1 hour 30 minutes to 7 hours (in an environment of 28°C) (Cooling time and duration may vary depending on the environment, so we recommend cooling for a longer time than the estimated time.) ※We cannot ship on weekends and holidays. ※Orders placed by 3 p.m. on weekdays will be shipped the same day.