Includes 1 (one) liter Glass Jar Made in France;Le Parfait is French for ?the perfect,? and the French can perhaps be forgiven for this rather bold name.;They are heavy, made from thick glass which can handle the heat of the canning process;Le Parfait jars are useful for keeping nuts, grains, and other things, as they keep out weevils, moisture, and other unwanted influences from the outside world;Le Parfait jars are French jars which have been designed specifically for canning and making preserves.