Holding 3.6 cups (29 oz), the portion size is good for all ages who are packing food for work, school, camping and more. Stainless steel rectangular container with lid. Container measures 4.75" wide x 6.75" long x 2" tall. Contains 29 oz (3.6 cups). Non-toxic: free of estrogen-mimicking toxins commonly found in plastic, such as BPA (bisphenol-A), BPS (bisphenol-S) and phthalates. Stainless Steel 201 Dishwasher safe. Not for use in the microwave. Food may be reheated in the metal containers in a medium-heat oven or over a campstove.