Regular Mouth Quart Mason Canning Jars with Lids & Bands (12 count) by SuperbThe difference is CLEAR literally. Compare Superb mason canning jars with other well known brands, and you can literally see the difference in clarity. How are these glass mason jars so clear? First of all, they don't have any etching or marring on their primary surface. (Aside from a small, innocuous batch number on the bottom of the jar that is part of the extensive quality control process.) These jars are made with high quality natural materials