This bento box is made of food-grade material, BPA-free. Odorless and stain resistant. Drop-resistant, strong, and durable material design is perfect for kids' school lunches and working meals for adults. Double layer built-in anti-scald lunch box containers, 3 compartments can separate different foods to keep the original flavor of food. This bento lunch box is dishwasher safe. Hand washing of the lid is recommended to maintain a leak-proof seal. Perfect for daily use, best and decent gift for your kids, friends or families. Our bento box prevents any spills, leaks, or odors in your bag, keeping your food fresh and keep the lunch bag clean all the time. There are invisible buckles on both sides, which fit closely with the box body and are not easy to fall off.