Which Philips Avent Natural nipple suits my baby best?

Nipples are available for 0m, 0m+, 1m+, 3m+ and 6m+. See image below for an overview. These Philips Avent Natural nipples can be used on the Natural Philips Avent feeding bottle and Philips Avent storage cups.

• The Natural First Flow nipple (with the number 0 on the nipple) can be used from day 1 and when switching from breastfeeding to bottle-feeding. It has an extra soft silicone nipple and it is the lowest flow rate available.
• The Newborn nipple (with the number 1 on the nipple) is recommended for babies of 0+ months. It is ideal for newborn and breastfed babies of all ages.
• The Slow Flow nipple (with the number 2 on the nipple) is recommended for babies of 1+ months old that are breastfed and bottle-fed. It has an extra soft silicone nipple.
• The Medium Flow nipple (with the number 3 on the nipple) is recommended for babies of 3+ months old. It has an extra soft silicone nipple.
• The Fast Flow nipple (with the number 4 on the nipple) is recommended for babies of 6+ months old. It has a bite resistant silicone nipple. This sturdier nipple is ideal for bottle-feeding.
• The Variable Flow nipple (with the I, II and III markings on the nipple) is recommended for babies of 3+ months old. This nipple has a slot cut into it which provides an adjustable flow rate. The flow rate can be varied by turning the bottle to align the I, II or III markings on the nipple with the baby's nose.
• The Thick feed nipple (with the letter Y on the nipple) is recommended for babies of 6+ months old. This sturdier nipple has a Y-shaped slot for thicker feeds to flow through.

• If you are breastfeeding, we suggest staying with the Natural First Flow nipple because it is designed to match the flow rate of the mother.
• If your child becomes frustrated at meal times. You may see them suckling hard then pulling away crying, suckling hard again or your baby is taking longer than 20 to 30 minutes to finish a bottle; this may be an indication that the flow is too slow. If this the case change to a nipple with a higher flow rate.
• If your baby has to let go of the nipple, is spilling milk, is getting too much milk too swallow or milk is dripping between the lips and the nipple, the flow rate might be too fast, change to a nipple with a lower flow rate.
• You can also use the Natural nipples with screw ring in combination with the Classic/Classic+ Feeding Bottles.