A multi-purpose container with rippled bottom, airtight, ""burpable"" seal to extend food freshness, heavy guage plastic for durability and it is microwave, freezer and top rack dishwasher safe, The rippled bottom permits fluid flow under meat for uniform marinating, It also permits air flow under tortillas, pizza, pastries, etc, to prevent food from sticking to the bottom during microwave heating, You"ll find many uses for this versatile container, Inside diameter is 10, 5 inches, Made only in the U, S, A, BPA Free, SKU: RTL23CR096