The lunch size Food Box is great for packing a lunch, sandwiches, leftovers and food for school or work. With easy to clean, durable stainless steel construction and food-grade silicone lid, the 20 oz Food Box is 100% plastic-free. A leakproof silicone lid with snap-and-lock tab seals tight when pressed into place, with a flexible corner for easy venting. No matter what you eat, our Klean Food Box makes a great bento box or lunch box for kids and adults alike. Also great for travel, camping, picnics, school, backpacking, and taking to-go meals anywhere adventure calls.