Ideal for the storage of store cookies, jelly beans, pickles, preserving jellies, jams, mustard, sauces, and even flavored vinegar, the Jelly Elite Collection Jam Jars are clear canning glass jars. Each jar weighs approximately 1.75 pounds and has a volume of 8 oz. The blue jars have a tight lock which will keep the stored goods fresh. Also nice to give away with home made jam.