A. SAFE MATERIAL REUSABLE---The 4-compartment snack bento box is made of a durable and BPA-free wheat straw material that can be used multiple times. It is recommended to use these wheat straw snack containers instead of disposable ones to help protect the environment. (Recommended age 5 years and above) B. 4 COMPARTMENT SNACK CONTAINER---The 4 perfectly divided compartments make it convenient to pack a variety of snacks and fruits. Each compartment can hold about 5.8oz of food, which is suitable for portion control and can satisfy the appetites of both kids and adults. C. EASY-OPEN LID---This is a sealed snack bento box. It is designed with a child-friendly lid that can be firmly fixed. Even when the lid is tightly closed, toddlers can open or close it relatively easily. It is easy to use (not suitable for liquids). D. LIGHTWEIGHT STACKABLE---It is lighter compared to some other bento boxes and can easily fit into a backpack or lunch bag. It can be stacked to save space. It can be easily stacked in the fridge and cabinets without taking up too much room. It is a good choice for adults and kids for work, school, and travel. It is also microwave, freezer, and dishwasher safe. Each set includes 4 different colored snack containers that are easy to distinguish. These snack containers can be used in the kitchen, on the go, in the office, or for storage.