iiamo Home 2 Anti Colic Baby Bottles Pack of 2 with 100% Silicone Teat BPA-Free 380ml (Green/Blue)

I'm a bit frustrated. One of the most expensive bottles on Amazon. I thought they must be awesome. But they are not. Absolutely avoid them. First of all - no airflow. Baby will create a vacuum inside the bottle after 3-4 sips. No airflow = they will cause issues. Definitely they are not anti-colic - that's a fact. Measuring is also very complicated. Small digits, nearly impossible to read in the evening when less light. So in general 1/5 for that bottle. We've tried really hard.. but every time baby refuse to drink from that bottle. We've tried on friends babies... the same. So I've tried to sip from that bottle... guess what - not even one sip and vacuum inside. Impossible to drink. When you screw a bit then leaking. Please avoid that, go ahead and find normal baby safe bottles.

I would like to return the bottles because the second one came very late and husband had already bought a set of other bottles so we don't need these ones any more. They haven't been used.Our Au Pair has a sight problem and will find it difficult reading the numbers to measure the amount of scoops.Thanks