Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Great Pump for Pumping One Side

I use this pump in the mornings as my baby generally feeds from one side during the night, leaving the other side engorged. I can get 5oz out of it as quickly as I do with my Ameda Purely Yours double pump. It's a little noisy, but doesn't bother my baby. It's extremely portable, and having it allows me to keep the double pump at work rather than having to lug it back and forth to home. A good investment!