I really really love these bottles, nipple style, sippy and straw spouts! I love that they are silicone and the nipples are super soft and I wish I would have found this bottle when my baby was a newborn because I would have used them then. I gave it four stars because some of the nipples and collars do not have a nice seal and tend to leak onto my baby. If they didn't leak so much I'd give them five stars!