Black Blum's first microwaveable 3-in-1 stainless steel lunch box: 100% multi-functional lunch bowl, oven dish & food storage. Made from durable stainless steel and polypropylene. Vacuum seal for 100% leakproof, airtight storage. Oven and freezer safe. Size: 19 x 7.40 x 14.30cm. Weight: 280g. Capacity: 900ml Washing Instructions: All parts are dishwasher safe. Lid on the top rack only. Handwashing will prolong the lifespan of the product. Composition and Material: 18/8 (304) stainless steel, Silicone, Polypropylene