Fredman plastic bags are the perfect tool, valued by kitchen professionals. They are made of food grade LDPE plastic, so you can safely use them for preparing, storing and transporting food.
Please note that the bags can be used for freezing, storing food in a cold room or preparing food at room temperature, for example, but they cannot withstand intense heating. Frozen food can be heated up by placing the bag in a bain-marie or thawed by putting it in the microwave.