Fellow Atmos Vacuum Container 1.2 L in Clear Glass Overview The Fellow Atmos vacuum container takes on the all-important responsibility of protecting your coffee against the outside world. By twisting the lid back and forth, the air inside the container is sucked out, preventing oxidation and extending your coffee's shelf-life by up to 50%. A vacuum lock indicator in the form of a dot on the lid will drop to reveal a green ring, letting you know that the air has been successfully removed from the container. When you need some coffee, press the button on top to release the vacuum seal and unlock the container.The Atmos 1.2L in Clear Glass holds 1.2L of whole bean or pre-ground coffee and is made from durable powder coated stainless steel. The Fellow Atmos vacuum container is available in three styles: clear glass, matte black stainless, and matte white stainless.