I am a faithful Advent of products and am not disappointed by this evolutionary bottle. Positive and negative aspects dependent: - The handles are integrated into the bottle socket, unlike "classic" bottles where it is separable. This bottle is nothing progressive in itself, since it will separately buy the soft spout cup to switch mode. I would have preferred the term "transition"! - Recommended age: 4 months. Ok for first taken baby hand (soft rubber handles and notched below). By cons I find the pacifier too fast (3 holes) for this age. After all depends on your glutton! - Graduation up to 200 ml, so it is suitable for 180 ml of milk bib, but just becomes a bib for 210 ml. Otherwise use for water throughout the day. - Big regret graduations do not go 30 30 but all 25 ml. So we have to go a little snitch for milk dosage, it is not great ... - Pacifier dual handy valve: it fits above and below the socket. Once screwed, no leakage. And we find the anti-colic system that is efficient in terms of my children. - Finally, even if the nipple is a little hard, baby had no desire to switch from breast to bottle: good grip on the palate!