Currently we only have S size available, which is good for nipple size 15mm-20mm.

No. The SuckleThrough Nipple Shield is made of soft silicone that is very comfortable to use even when your nipple extends outside the opening of the shield.

Yes. That's the purpose of the Suckle Through Nipple Shield, which facilitates the transition to direct breastfeeding while still providing protection on the base of mother's nipple. Free milk flow is important for saliva-breastmilk communication and weaning off traditional nipple shields. However, if you have inverted nipples then maybe your nipple doesn't extend through the hole on it. But you should still be able to use it to help with direct breastfeeding as the nipple portion of the shield still mimics a mother's nipple.

We don't recommend it for moms with inverted nipples because it doesn't have enough structure to mimic mother's nipple to stimulate baby's nursing. It is designed for moms with elastic nipples.