Neck cooler that can cool for a long time just by soaking it in water. - Product Name: Hiyakuru Neck - Cooling Function: Cools down just by soaking in water - How to Use: Reusable and cools for a long time - Target Area: Use on head and neck Thank you for viewing. I have one more in stock, so please comment if you would like it. Please understand that this is stored at home. Instant purchase is welcome.