Cool sensation for scorching environments! A professional model for those who demand more. Extra-thick size, 3cm diameter. Features: Naturally freezes at 21°C or below, keeps you cool for approximately 150 minutes. Color: 33 Moku Size: Free size Characteristics: Keeps you cool, doesn't condensate, reusable. Cool Neck Ring, Cool Ring, Ice Neck Ring, Neck Cooling, Heatstroke Prevention, Neck Cooler, Adult, Heat Relief, Cooling Goods