Tommee Tippee fast flow teats problem

[Rohey]

Need advice all. Just moved up to fast flow anti colic teats but they collapse when dc is sucking away. There is no anti colic valve to check and pinch open. Are they faulty or am I doing something wrong?

Myself and a few mums I know have have issues with TT teats collapsing...not the fast ones though but it seems to be a common TT issue.

We have that issue a bit too. Perhaps loosen the white ring a smidgen to let a little air in? Has worked for me on other teats.

Hmmm, if this happens with mine I pinch the valve but if yours don't have them I don't know. Take teat out DC's mouth and start again? (Is it possible for them to suck too hard??)

Will try loosening the ring. Is it worth getting in touch with TT?