✔️ Made by wheat fiber materials - Safe to use on daily basis. Itopor Bento Box use the most environment friendly wheat fiber materials. FDA passed and BPA free. It is safe and reliable.✔️ 100% no leaking bento box - We understand that you need a sealed designed bento box to carry your lunch. The first layer is with tight sealing material to make sure 100% no leaking when bringing your lunch. You can be rest assure about this. PS: Only the first layer is leak proof.✔️ Three compartments bento box - We understand you may bring different kinds of food for your lunch. The 3 layer design is really important. According to many of our customers, three layers of lunch boxes are the most reasonable design. ✔️ A heat resisting bento box - When you bring your lunch to your office, you can reheat it by Microwave. But make sure open the lid when using the microwave, as the lid is very tight with the box and the gas cannot come out if close it when heating.