[ GIẢM ĐAU CỔ ] Vòng Cổ Làm Mát Tản Nhiệt Hình Tròn Tiện Lợi

How to use: Hang on the neck can be, can maintain a cool feeling of 28 degrees for about 2 hours, cool but no ice feeling, the surface of the product will not condense water to keep dry. Can be recycled, when the cooling ring in the water can be placed in the refrigerator or air conditioner for 10 minutes or so can be restored to the state of ice crystals, then can be used for about 2 hours until it becomes water. Compared with traditional cooling products such as small fans, the advantages: no need to recharge, can be recycled, can be made in various colors shapes, hands-free, small and light. 1. Long-lasting cooling tube: Get ready for the hot summer and innovative materials are developed to keep you cool, with ice crystal mixture that freezes faster than water and lasts longer!. 2. No battery required: No charger required Just put this neck cooling tube in the refrigerator or near A/C to freeze first, the mixture will stay at 18°C to keep your neck cool. 3. Keep Cool, Keep Safe: The