304 stainless steel material This durable food containers are made from 304 stainless steel, which makes it resistant to rust and corrosion. It also lasts for a long time, so you can reuse it for any type of food or snack. There are a lot of deffecint size You can choose what you want Safe: Its scary how many food containers still contain chemicals like BPA.Our company(Treering) believe these product will be regulated and all food containers will be made with clean material 100% Leakproof: These containers keep your food fresh with an airtight seal. No need to worry about unwanted leaks and spills. And, theyre easy to open for both kids and adults. Safe Plastic Cover:These stainless steel containers come with clear plastic lids so you can easily see whats inside. Theyre safe and BPA-free.