Cool Collar For Refreshing And Refreshing Outdoor Exercise 135ml Cool Neck Collar Features: Cool pillows and ice packs prepare you for the hot summer and keep you cool. This material freezes faster and lasts longer than water! (It takes 10 minutes in ice water and 20 minutes in a refrigerator or conditioner!) No battery required! No charger required! Any place below 18 ° C (64 ° F) will start freezing. Just put this neck tube into ice water. Enjoy a of 40 minutes to 2 hours. The cold insulation time varies depending on the external environment. By maintaining the optimal temperature for , there is no risk of skin necrosis or frostbite. new coolant, no condensation! (It's dry and cold)! TPU fabric with strong sewing ability! Headache and hot flashes - can truly headaches or hot flashes. Put it in the or directly on the . Product Description: Package included: 1 x Cold Collar Note: Please allow some difference due to manual measurement. 【CONVENIENCE】It is good for our life and can make our life easier. 【IDEAL GIFT】This is a great gift for your parents, wife, husband, friend who loves life. 【EASY TO USE】You can use it very easily. 【High quality and professional】Practical gadgets for life. 【BEST SERVICE】We respect and cherish every customer. If you have any questions before or after ordering, please feel free to contact us. We strive to provide services that meet your requirements. If you have any questions about our products, please feel free to contact us directly. We will reply and solve your problem within 24 hours. Happy shopping for you!