Jars with airtight lids offer freshness for anything your choose to store within them. Many jars have stainless steel lids but not all have a screw on lid that’s totally airtight. Our 37oz. At Home Glass Canister with Screw-On Metal Lid ensures the utmost protection of food items or anything else stored inside – something you’ll find in the best kitchen canisters. Air and odors stay away.