Material: 100% Food Grade Silicone Care: Dishwasher Safe ( Top Rack Only) This Silicone Bento Box offers an eco-friendly alternative to traditional plastic food containers and is perfect for packing lunch for school, work, or family gatherings. Its durable, thick construction ensures long-lasting use. Ditch the plastic and switch to silicone with this reusable bento box. Our Bento Boxes are FREEZER SAFE, MICROWAVE SAFE, DISHWASHER SAFE, OVEN SAFE (410 DEGREES FAHRENHEIT)