Stacking and packing a healthy lunch is as easy at 1-2-3 with our elegant ECOlunchbox Tri Bento that's made up of three separate layers which neatly clip together. Each lunch container in the stacking Tri Bento metal lunchbox set is made from non-toxic stainless steel and is portioned for a healthy lunch or snack. 3 tier round container with clips. Capacity 36 oz (4.5 cups). Tare Weight: 16 oz. Great for portion control. 12 oz (1.5 cups) fits in each of the three layers. Clips on these stackable bento lunch boxes are kid-tested and can be adjusted to desired stiffness. The stainless steel bento box container measures 4 inches high with 5 1/4-inch base diameter. Eco-friendly design made from 100% high-quality BPA-free stainless steel. Non-toxic: free of estrogen-mimicking toxins commonly found in plastic Because all ECOlunchbox lunch containers are made from durable, reusable materials, you can reduce your impact on the planet while enjoying perfectly-portioned, fresh meals on-the-go.