The sleek polar bear becomes a small print on the cool towel. Is the light and fresh color fresh and refreshing? https://c1.staticflickr.com/5/4232/34580646054_5afd2ec886_b.jpg The overlapping openings of the zipper are removed, and the cold-keeping agent is easy to put and easy to take, shortening the preparation time for going out. There are elastic rope adjustment rings on the upper and lower sides, which can be adjusted according to the dog's neck circumference. https://c1.staticflickr.com/5/4216/35292593871_3654514836_b.jpg ❄️ About the cold preservation agent: Qinghai Chemical Co., Ltd. combines the Keep-Cool cooling agent developed by Japanese technology. The packaging material is antibacterial nylon. The ink does not fall off. The load is over 100kg under pressure test. It is safe and secure to meet the food safety standards. https://c2.staticflickr.com/2/1865/29491831987_3e03f93ec3_b.jpg ❄️one size Suitable for collar 32~52cm with 10 cold coolant ❄️Model size reference Small evil model Bonni: ♀ cow cow fighting, 8 months, 9kg, neck circumference 39cm, wearing a little loose. Use the cool towel 3 steps: Step1: After receiving the damp towel, the cold agent is iced to the freezer for about 1 hour. Step2: Turn the cool towel to the back and place the frozen cooling agent in the cool towel interval. Step3: After installing the cold preservation agent, turn it to the front, put it on the dog and adjust it to the appropriate size, you can go out safely! The temperature of the cryogen increases with time and slowly thaws within 2 hours of outdoor. After thawing, it can be put back into the freezer, which can be used repeatedly without limit of usage.