Combining two innovative materials, our lunch box set serves up hot and cold lunches. Features a stainless steel base and a premium silicone food compartment that can go from refrigerator or freezer to microwave and oven. We've also added colourful soft touch silicone clips for easy opening and closing. - Stainless lunch box base is oven-safe, but not microwave safe - Leak-proof - Dimensions: 7 1/2 x 4 3/4 x 2 1/4 in.