SUO Neck Cooler, Size S, two items I think these can be used up to around age 6. They have a cute ice cream and cherry pattern. I liked them, but I bought a different pattern, so I'm selling these. There are no noticeable stains or scratches, but please purchase only if you understand that these are used items. [F.O. International] ICE RING★SUO★Kids S size The following is an introduction from the official website: High-performance neck cooler "ICE RING®_Ice Ring" "ICE RING®_Ice Ring" freezes naturally below 28°C and can be used repeatedly anywhere, indoors or outdoors. By cooling the neck, ICE RING® cools down the whole body. By putting it directly on the skin, it absorbs the body's heat and cools down comfortably. It releases the heat trapped in the body. ・For sports and other lessons. ・For outdoor scenes such as camping. ・For cooling down after a bath. ・For parents' commutes. And so on. It's also great for short outings and as an outdoor item (cold pack). Point ①: Freezes naturally below 28°C Point ②: No condensation, so it's comfortable Point ③: Moderate cooling lasts Point ④: Can be used repeatedly