Food Grade Safe Material: Our bento box is made from good materials and it is BPA free. It is no smell,stain resistant and will not get moldy. Microwave Safe(without lids,2-3 mins under 248) Freezer. Safe(14)Dishwasher cleaning is not recommended.Hand washing is recommended for the lid to avoid any deformation caused by high temperature and pressure washing)This bento box is perfect for school,office,factory,home and outdoors.Put your pasta,chicken,salad,sandwich,fruit,snacks or sushi in it and enjoy it when and where you like. Portable Lightweight Bento Lunch Box: The dimension of 8.25 x 5.5 x 2.75 inches makes it portable and easy to carry.The perfect design of 1400 ml vs 11.4 OZ makes it both large capacity and light weight.