It can do its job, otherwise I would not hesitate to give it zero star, as it definitely couldn’t be the real Haakaa. After a thorough wash and sterilising through boiling water, it still stinks. Can’t imagine feed bub with milk from such a stinky thing! It’s gross. Not to mention the way it is packed, making it impossible to be returned once you figured out what the product really is. Totally disappointed. Highly recommend those who are interested considering buying from the official website.