The Ninja Professional Stackable Chopper is the ULTIMATE tool to assist everyday chefs with everyday tasks, quickly and easily! Perfect even chopping performance with multiple bowls for multiple creations. Stackable, microwaveable, sealable, portable and serveable for unmatched versatility! Ninja prep bowl is especially designed with a frosted area, making it easier to mark the date or contents using a dry-erase marker. Modular design allows bowls to nest in storage or refrigerator, saving space and making it easier to organize your fridge or cabinets! TightSeal technology protects food from flavor absorption and odors to ensure food is tasty and fresh! Product Details Container measures 16-in. Includes four 16-oz. Ninja prep bowls, four TightSeal lids, interchangeable power pod 1-year warranty