I put one less star than its competitor L. Indeed I tested two products. The charge I will do to this one is the matter of plastic that is medium and the material of the insert to write the date of circulation of the milk and the amount which does not allow the pen to score well. Then the opening of the bag is not sharp and I happened by tearing up the opening rips and tears to the description part of the information. The readable amount of milk is not accurate either it is more important than reality. Strong point compared to competitor standing the bag fits perfectly and is stable for storage in the fridge.