With lids, bands & labels. For preserving food. Freezer safe. Choose the jar that fits your needs. Jar Size - Some jars have shoulders while others have straight sides that work best for freezing. Your recipe will guide you on the recommended jar sizes. Mouth Size - The diameter of the jar opening determines the mouth size. All jelly jars have a regular mouth. Regular Mouth works best with pourable foods such as jams and jellies, salsas, sauces and pie fillings or chopped fruits and vegetables. Regular Mouth: Jelly Jars (8 oz): Ideal for jams, jellies, conserves and marmalades. For over 125 years, Ball fresh preserving products have been a staple in American kitchens, helping preserve freshness, healthy nutrients and delicious creations. Made in USA.