Our wondrously clear Rectangular Snapware Containers hold kitchen staples like flour, sugar, rice, coffee, or tea beautifully on the counter or in the pantry. Made of shatter-proof, Flexiglass plastic, these containers won't stain or absorb odors. They're refrigerator and freezer safe and are recommended for dry food storage only. The lid is the outstanding feature of a Snapware Container. It's easy to open, has a wide circumference to accommodate scoops, locks in the open position for accident-free pouring, and has an airtight silicone seal to preserve food freshness and flavor. In fact, the lid has a patented design that seals around the silicone gasket from above and below to prevent any transfer of air or moisture, either in or out of the canister. The result is a seal so complete, potato chips left in a Snapware for year were as fresh as the day they came out of the bag.