Bon Chef 9319DI Stainless Steel 3 Wall Diamond Collection Cold Wave Bowl with Cover, 3.4 quart Capacity, 9-7/8" Diameter x 4-3/4" Height 3 wall cold wave miracle bowls Pre-freezing these bowls will keep your food cold for 8 hours at ambient temperature Outer air chamber prevents the bowl from sweating while keeping the inner chamber gel frozen Bowl comes with a plastic cover 3.4 quart capacity