I have used this product every day for almost nine months, and I have been very pleased. I knew I wanted to breastfeed, but I also wanted her daddy to be able to feed her occasionally, and I didn't want to feel like I could never be apart from her. This pump is very affordable, and works very well. It easily attaches to any size bottle Avent makes, which is very convenient. It also comes apart for easy cleaning. It may not be quite as efficient as an electric model, but always works well. It's also small, which makes it easy to even throw in the diaper bag, if needed. I have been very happy with this pump.