Tupperware FridgeSmart Container Set

Tupperware's ACE (Atmosphere Controlled Environment) system creates the optimal environment to maintain freshness for longer. FridgeSmart Containers use this special three-way venting system to help regulate the atmosphere inside the container by balancing the flow of oxygen coming in and carbon dioxide going out. This is a set of three FridgeSmart containers; small 4 1/2 cups, medium 7 cups and medium long 8 1/2 cups. Unit is brand new. Free gift included with purchase. Inquiries welcome.