2.4 liter hpl813l lock & lock food container has some advantages: Polypropylene material Polypropylene is one of the materials that has passed through production under heat and chemical testing to gain better strength than other materials in general.? Lock & lock products can also be included in the microwave, You can even put it in immediately after it’s removed from the fridge. Please remove the cover when you’re in the microwave. Bpa-free Bisphenol a (Bpa) It is a controversial chemical found in food cans, certain water bottles, and many more.? Lockdown system 4 sides. 4 side locking system cover with the seal, Makes it waterproof and airless So that your food can stay awake longer than any other product. Simple and clear design. Designed so that you can easily open, close, and see what’s inside.