Thank you for looking. Only tried on. Size S Regular retail price ¥3,980 (new model on Rakuten) This is the old design. I am also listing a size M, so please take a look if you are interested. This is a used item and has been stored at home, so please refrain from purchasing if you are sensitive about such things. *Packaging materials are reused. I will pack it as small as possible. I would appreciate it if only those who understand after reading my profile would purchase. Shipping method may change between RakuRaku Mercari便 and YuuYuu Mercari便. If you have a specific shipping method, please let me know before shipping. It has a cooling effect that keeps your body temperature at -12℃ with a plant-based ice head using NASA technology. - Model Name: Smart eco ice - Features: Uses NASA technology - Cooling effect: -12℃ perceived temperature - Material: Plant-based material - How to use: Use as an ice head #Hat cooler #Heatstroke prevention