Isabelle has these bottles and I think they are great but last week I bought new teats (3+ months ones) and they seem to be loads softer and they collapse all the time meaning I have to constantly remove it from her mouth to let the air back into the bottle? Not sure if its the valve not working or something but wondered if anyone else has had the same problem and do you think I should write to them and see what they say??
Tan x
Tan x