Ordinary blenders spin contents around the walls of the jar, which can leave whole chunks untouched by the blades. The Wave Action System has a unique container and blade system which is designed to continually force the mixture down into the blades for perfectly smooth results every time. A removable filler cap makes adding liquid while blending easy and the spout eliminates messy drips while pouring. Clean-up is a breeze as the whole jar goes in the dishwasher.