--Put the IceGel into the freezer with no folds--they will be fully frozen in about 10-12 hours.

--And place enough bottles of iced water (about 10¡æ) into the PolarBag, every one hour to record the temperature of the water until the temperature of water above 10¡æ. Then calculate the cold life.

--When you want to show PolarBag(with frozen IceGel in the liner) to your customers, the result will be better when you put some cans into PolarBag two hours earlier before showing.

--Other details you could refer to the English instruction manual.