Just wanted to give you a word of caution about this product. I have been using it to prepare fresh feeds for my lo and when I went to use it today, all the coating from the inside of the flask had come away The bits were all floating in the water. I've emailed TT about this fault as I am really not a happy camper that this has happened. Just thought I would mention it as it may not happen to every flask but just keep an eye on it when you are using it. The bits inside that had come off were pretty sharp and the smaller bits would fit through the gap when pouring the water out.