This X-Small Pop-Top carries a unique logo applied design, and will hold 1/6 oz of dry herb or 3 fl oz of liquid. Due to a patent-pending lid with double-walled construction, the contents of a 420 Jar will not lose freshness or potency while being stored in this unit. The heavy, pressed glass of the lid, along with a quality gasket ring, creates an air-tight seal you can actually hear let go when it "pops" as the lid is lifted off. Stash jars don't have to look good to work, but it doesn't hurt to have something as nice-looking as it is functional. Decals are applied to 420 Jars by hand in a special ink, and then kiln-fired to bind the design to the glass, making it permanent. 420 Science is proud to offer a quality item that will stand the test of time, and help their customers save money by keeping expensive supplies fresh.