This bento box dividers is Made of food grade PP material,BPA FREE, well made and sturdy. Removable Compartment Tray: you can use this sectioned lunch box 2 different ways, as a single large compartment or as a 3 compartment lunch box to keep your food separated. 100% Leakproof compartment lunch box, heat-resisting: 212℉, cool-resisting:14℉, Microwavable without lids, 2-4 mins under 212℉. D..