BPA-free polypropylene, Tritan™, silicone. A 34 oz. (1 L) lunch box that makes it easy to organize your lunch and presents your food beautifully. 100% leak proof. Includes stainless-steel fork, inner compartment and leak-proof sauce pot. Microwave (except lid), top rack dishwasher (except lid) and freezer safe. BPA free. Inner compartment 5 oz. (150 ml), sauce pot 1.7 oz. (50 ml). Packaged in Black+Blum retail gift box. Black+Blum are proud members of 1% for the planet and donate one percent of their total annual sales (including this item) to non-profit environmental causes.