Model Number:Ywj6_1657089529 Colour:(Blue Product Dimensions:18 x 17 x 2 cm; 160 Grams Item Weight:160 g Description: The liquid inside is the imported liquid. This product can be used in direct contact with the skin after being frozen in the refrigerator. The surface does not absorb and water drops appear, the temperature is always kept at about 18 degrees and it is very comfortable to wear. If ordinary water is put in the fridge and then removed, it cannot be used directly on the skin, it is very cold! Our cold neck rings are made from a special liquid and are very comfortable to wear in direct contact with the skin. Specification: Product Name: Neck Cooler Product material: PCM + special liquid. Size: approx. 18 x 17 cm. Weight: approx. 160 g. Package includes: 1 x neck cooling tube. Notes: Due to the lighting effects and shooting angle, there are colour differences in the product, please. Due to manual measurement, there is a tolerance of the product size. No battery required. No charger required. Simply place this neck cooling tube in ice water. No ice around you? Don't worry. It freezes with any AC! Car AC, office AC, home AC, ice box, refrigerator, freezer. Enjoy a cool time for 4 hours up to 6 hours indoors and 3 hours up to 5 hours indoors. The cold holding time varies depending on the external environment. No risk of skin necrosis or freezing by cooling down due to an optimal cooling temperature. Wraps around the entire neck: the ergonomic design is an efficient cooling of your neck and shoulders. Wear it while you work outdoors, cycling, doing sports, yoga, training, participating in outdoor concerts and other leisure activities Be ready for a hot summer with innovative materials to keep you cool. This gel freezes faster and lasts longer than water! Coolant without condensation phenomenon. (dry and cool)! Physical cooling and safer. No battery required. No charger required. Simply place this neck cooling tube in ice water. No ice around you? Don't worry. It freezes with any AC! Car AC, office AC, home AC, ice box, refrigerator, freezer. Enjoy a cool time for 4 hours up to 6 hours indoors and 3 hours up to 5 hours indoors. The cold holding time varies depending on the external environment. No risk of skin necrosis or freezing by cooling down due to an optimal cooling temperature. Wraps around the entire neck: the ergonomic design is an efficient cooling of your neck and shoulders. Wear it while you work outdoors, cycling, doing sports, yoga, training, participating in outdoor concerts and other leisure activities Be ready for a hot summer with innovative materials to keep you cool. This gel freezes faster and lasts longer than water! Coolant without condensation phenomenon. (dry and cool)! Physical cooling and safer.