Come and see our amazing products. Our eco-friendly stainless steel double-layer lunch box is a very practical promotional gift, especially for builders, workers and students etc. The inside is food-grade stainless steel, the outside material is PP. The inside is food grade stainless steel, and the outside material is plastic. In order to have a perfect experience in using, the double-layer design, bento box consists of 3 parts - a sealed lid (with a hidden cutlery compartment), a 201 inner liner and a microwaveable outer layer that can be heated and used. Compared to disposable tableware, this double-layer lunch box is more environmentally friendly. When you want to wash it, just throw your bento box and lid in the dishwasher. Pls confirm with us about the packing info, stock color and exact production time before placing your order.