Lunch box is made of food-grade materials and high quality stainless steel.Non-toxic,tasteless,health and safety. The lid with extended fastening design,close the lid and box body fastening,no leaking no sprinkle,easy to carry.Easy to be carried with the handles more convenient to carry. This Lunch Box is a interpretation of concise and elegant style. BPA Free Easy to carry Single Layer Stainless Steel Lunch Box Silicon ring enhance the sealing effect Silicon Air-hole, Convenient to open Stainless steel with stovoing varnish