SCREW-ON AIRTIGHT SEAL KEEPS FOODS FRESH: The screw-on mechanism ensures an airtight seal which will prevent air to enter, protecting the hermetic seal of the jar. Airtight canisters not only protect the contents from insects and moisture, but also ensures they remain fresh for a long time. HIGH QUALITY SAFETY MATERIAL: This airtight canister set is made of high quality stainless steel and lead-free glass. Excellent stain-resistant metal seals airtight and clasps. It is safe for everyday use. Your new container set has no smelly odor and will store food with no BPA, toxic chemical or other chemicals that leach into food. SWEET DESIGN WILL SAVE YOUR TIME: Clear see-through window allows easy viewing of canister contents. With transparent glass window, you will save more time. They are great for storing cookies, coffee, flour, sugar, nuts, coarse cereals and more. This practical canister set is perfect for various occasions including countertop, restaurants, bistros, pubs, cafe, pantry and so on. EASY TO USE AND CLEAN: These stainless steel kitchen canisters are dishwasher-safe, however we recommend hand-washing to protect the finish. A quick wipe with a damp cloth is sufficient for a light cleaning. And they are extremely user friendly. FOUR CONVENIENT SIZES: These canisters all measure 3.9" Diameter, and are sized 1 - 12" (64oz), 1 - 8.75" (46oz), 1 - 7" (36oz), and 1 - 5" (24oz) capacity jar.