Lunch boxes are made of food grade material that is odorless, BPA free, non-toxic and eco-friendly. They are heat resistant and microwave safe for daily use. Environmentally Friendly Bento Box: You can comfortably use the bento boxes by one or two layers with lid, the strip Central elastic is designed for safe and parable transport. They are convenient food containers for school, work, picnics, parties and home. Upgraded Lunch Boxes: Our lunch boxes are designed with 2 layers which can make your different foods separately, to keep them fresh and nutritious. Perfect food boxes: The double-layered food boxes for children are 18.5 x 10.5 x 9.2 cm. They relate to adults as well as students. There is a set of cutlery in the package, each of them can be easily cleaned, and can also be washed in the dishwasher. After Sale: If you have any questions about the product or any quality problem, please feel free to contact us at any time, we will be responsible and get back to you within 24 hours.