The round stainless steel food container cup holds 1/3 of a cup. It's the smallest container in ECOlunchbox's 5-piece Blue Water Bento Seal Cup nesting set made from non-toxic stainless steel and food-grade silicone. The Seal Cup Mini nests perfectly inside the Seal Cup Small. Capacity 3 oz. (1/3 cup). Measures 2 5/8 inches round by 1 1/2 inches tall. Tare weight 1.4 oz. etched on the bottom so food container may be used at food bars and delis that charge by food weight. Lunchbox bottoms of this small leak-proof container nest and stack for easy storage. Designed for use with the 5-piece Seal Cup collection, which includes Mini, Small, Medium, Large and XL sizes. Non-toxic silicone lid and type 304 stainless container are free of estrogen-mimicking chemicals commonly found in plastics like BPA, BPS, and phthalates. The food container cup is designed to stack nesting for easy storage. Steel and silicone container is lighter than comparable glass container and non-breakable.