SL-1002 Stainless Steel Circle Sealing Convenient Bento Lunch Box (2 Layer, Blue) Arched handle: More convenient to carry Press Airproof : Box identify layers, effectively preventodor High Airtight Performance to keep warm Perfectly size for bringing lunch to school, to office or to the travel Lunch box is made of food grade materials and high quality stainless steel, non-toxic,tasteless, health and safety.