Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Blenders should be able to blend!

This blender has a lot of power and I emphasize a lot of power. But this is not the blender for you, if like me, you make shakes, smoothies, and health drinks on a daily basis. This blender does not blend. No matter what the ingredients, no matter how long I blended, there was always unblended bits stuck at the bottom; bits of banana, ice, or protein powder. And because this blender is sooo powerful, there is no way you can even take off the 2-ounce cup to add ingredients. The blender splashes everything to top, so if you want to add anything you have to stop the blender. Plus, you lose a lot of your drink to the very strange plastic lid. I'm returning mine. I've had better performance from less expensive blenders.