THE TOP SHELF QUARTER OUNCE ODOR PROOF STORAGE JAR - Thick premium quality glass with exclusive O-ring closure provide a more secure air tight fit, keeping products fresh INCREASE SHELF LIFE - Protection provided by dark glass reduces keeps coffee and herbs more fresh than a typical mason jar ALWAYS KNOW WHAT'S IN YOUR JAR - Includes access to award winning software with a unique barcode, allowing you to keep track of what you store inside your jar. LOCK IN SMELL AND FRESHNESS