Premium Material:Made of high quality 304 stainless steel(internal) and PP(external),this set of food containers are sturdy and durable.keep your food fresh for a long time Leakproof:With separate lid for each container,your lunch would never get mixed.The screw lids provide an airtight,leakproof seal to preserve freshness and prevent food from leaking and spilling Space Saver:This set includes different sized containers which conveniently nest inside each other to save space in your kitchen cabinet when not being used.They are also very easy to clean Multifunctional:Our bags are made of good quality fabric,which not only enhances insulation,but also makes it easier to carry.This set of lunch box will satisfy all your needs for lunch Application:Suitable for adults and kids use,perfect for picnic,home,office,camping,etc