Material: 100% Food Grade Silicone Care: Dishwasher Safe ( Top Rack Only) Ditch the plastic and switch to silicone! Our Silicone Bento Boxes are one of a kind and are perfect for your child's lunch. They fit perfectly into their lunch box and you can place them in the freezer overnight to keep your child's food cold for a period of time. The Bento Boxes have 3 available sections and a lid. The biggest section can fit a whole sandwich (Cut in Half). Our Bento Boxes are FREEZER SAFE, MICROWAVE SAFE, DISHWASHER SAFE