100% FOOD SAFE – Interior made from high quality food-grade stainless steel SS304 which will never rust and is naturally BPA-free. Does not retain flavors or scents, so you can use it over & over again.LEAK & SPILL PROOF – The BPA-free insulated bento box is sealed with heavy-duty food grade silicone to lock in freshness, leaks, and odors. Please ALWAYS the tiny valve on the lid first to release the pressure before opening the lunch box to avoid damage to the handles.DURABLE HANDLE & LID – This is the 2nd generation of our leakproof lunch box with improved handle and lid which makes it more durable.INSULATED LUNCH BAG INCLUDED - Made of felt fabric and food grade aluminum foil lined interior, it can not only enhance the insulation, but also make it easier to be carried around.