This lunch box is made of natural wheat straw+plastic, healthier than ordinary plastic lunch boxes, eco-friendly. 1000ml is enough to bring food for adult, kids, young, school teen, girls, boys. Food grade silicone seals are close to lunch container. 4 locks tightly lock bento box and easily open. The lunch box also has wheat straw material cutlery, suitable for bringing lunch to school or office, and can be customized with your logo. 5 1/8" W x 8 5/64" L x 2 3/4" H