Progressive Tomato & Onion Keeper Set : Airtight lids on these onion and tomato keepers lock shut to preserve distinctively-fresh flavor, prevent transfer of odors and premature spoilage. Unlock with a simple twist to remove onion or tomato. Easy to identify in the refrigerator, clear domed lids fit the natural round shapes of onion bulb and tomato, ensuring a tight-fitting seal. Reverse lid and use as the base to store chopped or sliced onion or tomato. Stackable design with flat-top lids and bases save refrigerator space. Color-coded for efficient storage. Dishwasher-safe. Progressive International develops timesaving innovations for food preservation and kitchen prep. A dedicated team of professionals turns practical kitchen ideas into functional solutions. Progressive tools and organizers make cooking and storage more efficient for the home gourmet and professional chef. Product Features Airtight lids lock shut to keep onion and tomato fresh longer, prevent transfer of odor and premature spoilage Keep onion and tomato fresh longer and quickly identify contents in the refrigerator with clear lids and color-coded bases Unlock lids with a simple twist Domed lids fit the natural roundness of onion and tomato Reverse containers to store chopped onions or tomatoes Stackable design with flat-top lids and bases saves space Progressive International develops timesaving, innovative tools, accessories and organizers to make cooking and storage more efficient in the kitchen