I bought this in the summer and didn't use it. Brand new, unused. Set of 5 cooling packs. How about these for sudden fevers this time of year? They're hard to find in stores this season, so this is your chance!!!! Regarding shipping: - Since the thickness is over 5cm, I'd like you to cover the Yu-Packet Plus shipping cost (455 yen) if it's unopened. - If it's okay to open and sell them individually, please comment. I will cover the shipping cost.