Bento box adult lunch box are made of high quality food grade PP and eco-friendly wheat straw, odorless, durable, reusable and easy to clean. Suitable for carrying all kinds of food. Our insulated bento box keep your food fresh and mess free by preventing any spills leaks or smells in your bag. Our Bento lunch box for adults can be stored in freezer, heated in microwave, washed in dishwasher,save your precious time perfectly. Remove the lid when heating, avoid that the steam generated during heating cannot be dissipated because the lid is too tight. The dimension of 8.15 x 5.59 x 2.87 inches makes it portable and easy to carry. The perfect design of 32OZ makes the bento lunch box for kids large capacity and light weight. The prices for 600pcs or over are based on ocean shipments.