Steeltainer Leak-proof Stainless Steel Full Size Container (Blue) Reusable, durable and leak-proof. BPA and Phthalate free. Great for sandwich, salad and more. 100% recyclable. Interior Material: Food grade #304 stainless steel. Outside Material: Durable polypropylene (#5) shell. Silicon seal prevents leaks. Easy clip on see-through lid. Freezer and top rack dishwasher safe. Not suitable for use in microwaves or ovens. Capacity: 560 ml or 20 ounces. Dimensions: 184 x 127 x 55 mm (7.25 x 5.0 x 2.2 inches).