Cool neckband for sale. Product Details: DAISO Cool Neckband Size: M Condition: Almost unused. My sister bought it for her child, but after opening it and trying it on, it was too tight, so it's being sold. My nephew, a third-year junior high school boy. He's quite short and small, about the third shortest in his grade. Please understand that it's tight enough that he found it uncomfortable. This popular item uses a special material that freezes and hardens below 28 degrees Celsius. It doesn't get cold, but it feels cool for a long time. Please note that the price is not negotiable. Thank you for your interest.