Thank you for viewing! Perfect for outings and work on hot summer days! This is a "neck cooler" that gently cools the back of your neck with cold water. Easy to use! Simply pour cold water or ice water into the main unit, and the cooling sensation will immediately spread to your neck. It's the perfect item for heatstroke prevention. Soft fit with PVC material! The flexible silicone material gently fits around your neck. Comfortable to wear even for long periods. Not just for cooling! It can also be used for icing areas after sports or for bruises. It adheres perfectly to areas you want to cool, such as the neck, shoulders, arms, and legs! Reusable and eco-friendly! No power supply needed, just add water. It can be used repeatedly, making it economical and environmentally friendly. 【Product Specifications】 ・Material: Polyvinyl chloride ・Color: Blue ・Size: Free ・How to use: Pour water or ice water into it. ⸻ Ideal for heatstroke prevention, outdoor activities, commuting, going to school, and watching sports! It's convenient to have one in every household♪ ※ Please close the lid tightly before use to prevent water leakage. ※ It will be shipped in a box, but there may be dents on the box. Thank you for your understanding.