Beyond excited when these finally became available at well.ca, extremely disappointed that I was only allowed to order one package at that time tho. I have been using Klean Kanteen Bottles since the beginning, highly recommend them to all new families. Super durable, you can't break these things! Easy to clean, and best of all they heat up faster than any other bottle, glass or plastic in the market. These Nipples proved very easy for my little guy to get used to and never caused any nipple confusion between feedings be it breast or bottle. He is 18mo and still prefers his milk in his Klean Kanteen bottle with his fast flow nipple!