I purchased the Medela Breast pump when I was nursing my first child. I didn't need to use it often and for pumping once in a great while this is okay. It lost the little suction cover on it once and definately didn't work, but once I put on a replacement it worked okay. Whith my third child I needed to pump at least two times a week and the pump didn't meet those standards. It takes a long time to pump just a few ounces and I got frustrated with it. I purchased a different one and was much more pleased with it. If you are looking for an occasional use pump, a medela manual might be okay, but if you need to pump often I would definately not recomment this one! I purchased a medel electric pump and was much more pleased with it. It was much quicker and it didn't take so long to fill up a bottle. Like I said, if you just need to pump every once in a while the manual is okay, but for anything else, I would get something better.