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Note: Normally the inside gel will not flow out, but please don't squeeze or press it too hard Do not poke, scratch or cut on the bag with sharp goods. How to use: -Open the water inlet and add water according your need. -Compress air in the bag,then light pinch sealing it. -After few minutes, the water and agent will melt together and become gel. -Put the bag in the fridge for 4-5 hours till it is frozen completely. Take it out for using. Gradually it will thaw and recover back to gel. Then you can freeze it again in your fridge.