Our baby is 5month and half but it's too fast flow. During he drink milk is keeping drop in his mouth he kept cough and can't drink a milk. I prefer natural response flow. Uf your baby is slow drinker, it doesn't suit for your baby.

We have been using them for a few days and we are very satisfied. The baby is 2.5 months old but drinks thickened milk, which is too thick to pass through nipple size 2. However, if your baby drinks regular milk, do not use them before 3 months as they may choke due to the high flow.

Having tried the regular natural ones first, I noticed that they are harder and don't drink as quickly and easily get tired. Maybe the baby happened to accept them more easily!