Most food storage canisters are ?Airtight?, which means they lock air in with the contents. The Airscape® forces the freshness-destroying air out of the canister, extending the life of your coffee, tea, flour, sugar, cereal, seeds, herbs, nuts, pet food or any perishable goods, to keep what?s good today, good tomorrow too!Created from quality glazed ceramic with a sustainable and beautiful bamboo top lid, the Airscape® ceramic makes an elegant storage solution for any kitchen. The inner Airscape® lid (BPA-free) makes a fun ?swooshing? noise as its pushed down, so you can actually hear it working.