<<Disclaimer: Verify this information before applying it to your situation.>> Yesterday for Mothers Day I received a bread storer from Tupper Ware. There is a grated vent in the bottom for air circulation and a special fitting cover, they apparently come in different sizes. I used to put mine in plastic ziploc bags but found it got wet inside so this may solve that problem, I will let everyone know how this new tupper ware container works out. Janet in Maine