ChefWave 8.8oz Stainless Steel Coffee Canister with Co2 Valve and Date Tracker The ChefWave 8.8oz Stainless Steel Coffee Canister with Co2 Valve and Date Tracker is an airtight, vacuum-sealed container that keeps coffee beans or grounds fresh and flavors intact with a one-way CO2 valve and 100% BPA-free silicone rubber seal for protection from light and moisture. A calendar wheel on top of the steel clasp seal lid allows for logging the purchase or expiry date of your favorite coffee beans or grounds. What You Get Coffee Canister Manufacturer's 1-Year Warranty