Features . Bon Chef 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 creating condensation while keeping the inner chamber gel frozen. In our test results a bowl was put in the freezer until gel was frozen. 35 degree F potato salad was placed in the bowl without lid and stirred every 30 minutes. After 8 hours the potato salad was at 38 degree F. For HandlingDo not put in dish washer hand wash with metal safe detergent Specifications . Dimension 11 875 H x 6 5 W x 11 875 L. Weight 7 25 lbs