ECOlunchbox Blue Water Bento Seal Cup Trio - Set of 3 Nesting Stainless Steel Food Storage Containers Three-piece plastic-free food container set made from non-toxic stainless steel with leak-proof silicone lids. 3 eco-friendly containers included: Small, Medium and Large. Stack them inside each other at the end of the day for easy transportation. All parts are dishwasher safe and oven safe. BPA-free, BPS-free, phthalate-free, and leak free! Steel and silicone container is lighter than glass and non-breakable. Total set capacity 40 oz. (5 cups). Total set weight 10 oz.