Durable, stylish design Non-toxic and tasteless; Built-in sealing rubber ring High heat-retaining efficiency High-quality stainless steel inner Leak-proof and convenient to carry PREMIUM MATERIAL – Made of premium stainless steel inner, this food container is sturdy and durable. They are eco-friendly, BPA-free and non-toxic, which can keep your food fresh for a long period. Please note these are not insulated so they won't keep food warm or cold. LEAK-PROOF – The lid provides an airtight, leak-proof seal to preserve freshness and prevent food from leaking and spilling. They are perfect for work, school, picnics, camping, etc. EASY TO CARRY - 850ml capacity and light in weight, you can put the lunch box into your bag, easy to open and close with less effort and easy to clean. Suitable for kids to school, adults to work, exercise, camping and travel. FUNCTION - Suitable for school students, company office employees, and workers who need to carry lunch by themselves. Also suitable for the driver who has to drive on the road for a long time. DISHWASHER, FREEZER SAFE - This lunch box for Royalford is dishwasher safe. Hand washing is recommended for the lid to preserve the leak-proof seal (High temperature and pressure washing may cause deformation of the lid). It is also freezer safe, you can keep the leftover food items in this container.