NON-TOXIC FOOD-GRADE MATERIALS
Our research led us to find that a lot of lunch boxes on the market are not made from non-toxic food grade materials. So we really made this a priority and we invested in the best material out there. For our own food safety and for a long lasting service.
That is why, our bento lunch box contains no BPA or phthalates.
Moreover, the outer box is made of ABS plastic and the inner tray is made of Tritan plastic - both known for superior impact resistance .
Here is what Wikipedia has to say about Tritan: Tritan is an impact-resistant plastic — products can be used without fear of shattering. Tritan is a tough plastic — extending the useful life of water bottles and food containers.