Keep coffee fresher with the Fellow Atmos Vacuum Canister. Built to evacuate as much air as possible for storage, the Atmos canister features a one-way air lock to keep your coffee as flavorful as possible! Simply twist the cap until the built-in indicator shows green. A pressure release button is built into the lid for easy opening when you need your next cup. Available in 10 ounce (0.7 L) and 16 ounce (1.2 L) sizes. Powdercoated Stainless Steel.