3COINS / Cool Neck Band 【M】 White Size: M (Neck circumference approx. 30cm) Compatible with refrigerator, freezer, and cold water. Solidifies below 28°C. No batteries required. Purchased in-store this year and used several times. I bought a lot of similar items, so I'm selling this to declutter. There are tape marks on the package (see photo 3). There are no scratches or stains on the main body, but please understand that this is a used item. Wiped with an alcohol sheet before listing.