Excellent pacifiers! The positive aspects include the soft and symmetrical nipple, so even if the baby puts it in "upside down" by themselves, there is no problem. The carrying case is also very convenient, as it can be used as a sterilization container in the microwave (25ml of water x 3 minutes at 750-1000W). The only negative aspect is that the shield of the pacifier is quite large, especially compared to the Chicco Mini 0-2 pacifiers that the baby had from around 45 days old until about 2 1/2-3 months old. Currently, the baby is 4 1/2 months old and the shield is still relatively large for their face.