Vacuum Seal Coffee Canister, 12ozA matte black stainless canister that holds a standard 12oz bag, with a pump built into the lid. Press the button in the centre and it draws the air out.What oxygen does to your beansRoasting creates the volatile aromatic compounds that give coffee its fragrance and its top notes, and those are exactly what you pay extra for with specialty beans. Oxygen reacts with them, and with the oils in the bean, and they go first. That's why a two-week-old bag smells like almost nothing compared with the day you opened it.An ordinary airtight container seals a container's worth of air in alongside the coffee. Pulling that air out leaves far less oxygen in there to do the damage.What it will and won't doIt slows staling. It doesn't stop it. Coffee is still at its best within a few weeks of roasting and nothing on a counter changes that. What it prevents is the last third of the bag tasting noticeably worse than the first third, which is where most of the loss actually happens.Keep it somewhere cool and out of direct sunlight, because heat and light degrade coffee too and a vacuum doesn't help with either.Details Capacity: 12oz of whole bean or ground, so a standard bag fits Mechanism: centre-button vacuum pump in the lid Material: stainless steel, matte black Brand: Created Co. Buy the size you'll fill. A half-empty canister is half full of air, which rather defeats the purpose.