Description:Cooling neck wraps are suitable for those who love outdoor activities such as fishing, hiking, jogging, camping, sports, etc, those who work in hot environment, farm, fishing, forestry, those who wear suits and those who attend sports events, music festivals, etc. Features:1. It keeps the freeze below 18 degrees and melts to absorb neck heat when above 22 degrees.2. No batteries are required, just put them in ice water, freezer and refrigerator for cooling.3. It is not easy to condense on surfaces.4. Long duration time, about 1 hour indoors and about 30 minutes to 1 hour outdoors. Specifications:Product Name: Neck Coo amp; ler Ice WrapMaterials: pvc coolant + PCM Size: About 18x17CM/7.09x6.69inchPacking List:1*Cooling Neck WrapsNotes:1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.2. Due to manual measurement, there is a tolerance in the size of the product.