Osaka Jar, Self-Sealing Airtight Storage Jar 13.5oz. "Shitenno-ji" (Black ) Keep your coffee protected from air, heat, light and moisture. Use for Coffee Beans, Coffee Grounds, Sugar, Tea Leaves and even Hot Foods. Self-sealing technology that is easy to use. Just place the lid on top of the jar and press down lightly on the sides. The seal created will be so strong that you can even lift the jar just by the lid. Release the seal just by pushing the knob to the side. Unique design, that allows any CO2 build-up to be release without letting in any oxygen. Capacity: 13.5oz/400ml. Dishwasher Safe.