Mixed Color Two-Piece Set, More Fashionable. Comes With An Insulated Bag, More Convenient To Carry On The Go. Two Changes Of Wear, Can Effectively Extend Cooling Time！ Innovative Technology: Our Cooling Neck Ring Uses A Unique German Technology Pcm Material. Automatically Freezing Below 18°C (64°F), It Freezes Faster Than Water And Maintains That Temperature As It Slowly Melts To Keep You Cool In The Heat. Easy To Use: Freezing Can Be Started Anywhere Below 18°C (64°F) Without Using Electricity. Even Freeze This Neck Cooling Tube Simply By Placing It In Ice Water, Refrigerators, Freezers, And Even Car And Home Air Conditioning Environments. Reusable: Made Of Very Durable Material. Keeps Your Body Cool Every Time You Freeze It. Rinse Well And Can Be Frozen Again For Use. Wide Range Of Applications: 【A】All Outdoor Sports: Hiking, Golf, Fishing, Driving, Fitness, Summer Camps, Etc. 【B】 Workers In Hot Weather: Cooks, Soldiers, Students, Field Workers, Gardeners, Farmers. 【C】 Relieves Hot Flashes Or Fever. It Even Works For Dog And Cat Pets! Safe And Reliable: The Materials We Use Are Bpa-Free. The Cooling Ring Has Been Tested By Sgs. Eco-Friendly Tpu Material Made In Korea, Ergonomic, Soft And Skin-Friendly With Elasticity, Thick Neck Can Also Be Used. High Frequency Sticky And Firm, Will Not Break Easily. This neck cooling ring cools the body quickly. You need it for outdoor sports, hot work, fever relief and fever. This product must be pre-cooled with ice water or frozen in the refrigerator, when the internal cold storage material collects enough cold energy, you can wear it and feel cool quickly.