Ninja BlendBoss Tumbler Blender - Stone | DB351UKSTNinja BlendBOSS Tumbler Blender Stone DB351UKST Meet the Ninja BlendBOSS, the powerful single serve blender that crushes like a pro, travels like a tumbler, and stands out with bold, on the go convenience. Perfect for smoothies, protein shakes, juices, and frozen drinks, it blends directly into a portable 710ml* tumbler so you can blend and go instantly. Powerful Ice Crushing Performance Driven by a 1100W high performance motor and precision