Keith 1 Liter Round Titanium Lunch Box. Made of pure titanium, with a purity certificate of more than 99% titanium, inert metal and totally harmless to the body. High resistance, durability and absence of toxins. Made of pure titanium : more than 99% titanium with traces of Fe, C, N, H and O. Totally non-toxic material and compatible with our body. Folding handles stay cool while cooking. Very light: titanium is 45% lighter than stainless steel, being just as strong compared to the same thickness of material. Does not give off odors or flavors. Material very resistant to high temperatures Suitable for ceramic, gas and direct fire cookers. Not suitable for microwaves or induction cookers. Corrosion resistant: resists both acid and alkaline solutions, does not rust. Titanium is a metal and therefore not a non-stick material. It is recommended to transport food and drink away from home: at work, on excursions to the countryside or the beach, etc., since titanium is a very light material, which allows it to be easily transported anywhere. This lunch box is not thermal, if you want to keep food warm you should put the lunch box in a thermal bag. It can be washed in the normal way, even in the dishwasher, although it is recommended to wash by hand, with a soft cloth and detergent.