Best Design of Food Grade Folding Silicone Lunch Box 1,Folding 2,easy to clean 3,Food grade silicone ... range: from -40 Centigrade to +230 Centigrade.3.Collapsible for saving space.4.Microwave, oven, dishwasher safe.5. Non-stick, easy ... evenly heated Best Design of Food Grade Folding Silicone Lunch Box