Babies aged 6 months and above can easily handle fast flow nipples. This Natural teat from the Avent line-up is designed with this fact in view. The SCF654/23 is a fast flow nipple meant for 6months+ babies. It features a soft ribbed design which encourages easy latch-on for the babies. The nipple itself is constructed entirely from soft silicon which offers a perfectly smooth feeding experience. It is also bite-resistant so that you don’t have to worry about the durability of the nipple. The flexible design of the nipple prevents it from collapsing as well.