The product does what it says. Simple Web Browser breast and bottle. All other bottle nipple as adventur, mam, NUK my son did not accept. Here you will find the bottles rarely commercially or only little bottle with the teat S. I use now for water which he warmed slightly Sucker extra drinks from the south. Now I have weaned and there are already some vegetables porridge, but when he sees the bottle is great joy on milk. Thanks to the manufacturer momma, you were my salvation!