Ninja Professional Stackable Chopper with 6 16oz Bowls and Lids - NJ1006 30 Stackable Design - Allows bowls to nest in storage or refriderator with born on label system Easy to use Power Pod - One touch pulse technology Tight Seal Splash Guard - Doulbes as a storage lid to keep food fresh Ninja Blade Technology - Provides even chopping performance Stackable, Sealable, Microwaveable, Dishwasherable, BPA-Free 16oz Bowls.