Atmos Vacuum Canister 1.2L designed by Fellow Oxygen makes coffee stale and robs your brew of its full potential. Atmos banishes air, moisture, and odors to stop your beans from aging out before you’ve enjoyed the whole bag. Twisting the lid back and forth sucks air out to prevent oxidation and extends coffee’s shelf life up to 50%. Choose between clear glass or upgrade to matte black stainless steel for an extra layer of protection from flavor-sucking sunlight. The Details Materials: Borosilicate glass or 304 18/8 matte black stainless steel 1.2 L canister holds up to 16 oz of coffee beans TWIST TO REMOVE AIR Twist the lid back and forth to remove air from the inside. The integrated pump means no more hunting down a separate piece EASY RELEASE BUTTON When the contents are calling your name, press the button to unlock and bring the air pressure back to normal. VACUUM LOCK INDICATOR Watch the dot drop to reveal a green ring. The vacuum is now locked to prevent oxidation and extend the shelf life of your coffee.