No. Because the 1-2-3 Variflow teat has a little slit in it rather than a hole - as is the case in regular bottle teats - the flow is that little bit greater. This means that setting 1 is a little faster-flowing than the size Small; setting 2 a little faster-flowing than Medium and setting 3 a little faster-flowing than the size Large. For this reason, we recommend using this bottle teat from 3 months on or when using thicker food.