1 Reusable Gel Ice Pack Insulated Dry Cold Ice Pack Gel Cooling Bag Food Fresh Food Ice Pack Lunch Box Food Canned Wine Medical Brand New and High Quality Quantity:1 pcs Color:As Pictures Material:PE,Resin How to use: 1.Fill water to the bag (100 - 600ml). The water in the bag will become gel. 2.Put it to the freezer till it gets Ice 3.Take out to use. 4.Can keep cool for 10 - 12 hrs 5.After defrost, the water in the bag will stay as gel. No need to pour out. 6.For reuse, just put it back to freezer to get it Ice. 7.Can be reused up to 1000 times Please don't eat or drink the water or gel in the bag Note: 1. Promised that all goods are taken in kind, quality assurance, 2-3cm manual measurement error. Because display and lighting some unavoidable factors, chromatic aberration is inevitable.