Neck cooler (Pentacool) PENTA-18 1 piece

It freezes in ice water for about 10 minutes or in the freezer for about 20 minutes, and can be used repeatedly for about an hour of cooling effect. It's not too cold, but just the right temperature, keeping you at a comfortable temperature whether you're indoors or out. It does not easily condense and does not get too cold even when placed directly on the skin, so it will not interfere with your exercise or work. It can also be frozen using a car air conditioner. Size (mm): Φ25×165×152 Material: Body side fabric: Polyurethane, Filling: Ethylene-PCM (Methacrylate Copolymer) Approximate neck size: 300-420mm Unisex Weight: 128g