For ice circles, everyone may be relatively unfamiliar. It is commonly used for sports and fitness, reducing fever and heat dissipation, driving and traveling, outdoor travel, fishing and mountain climbing, heatstroke prevention for infants and young children, especially for those who are prone to sweating in hot weather. Quickly reduce the core temperature of the human body during hot weather or exercise to ensure normal functioning, health, and comfort. This cool neck ring packaging bag is made of ground yarn material, with both sides visible on one side and invisible on the other. It is printed in full size, with exquisite design and good printing effect. It comes with an easy to tear mouth and zipper, and can be reused. The cooling collar self standing zipper packaging bag can be made into a self standing, three sided sealing structure.