According to US Baby experts:
Pacifier is a mom’s second breast, so it is more important to your baby’s growth. US Baby has its unique design for the stage-specific function of each pacifier. Therefore, US Baby experts do not recommend moms to change the size of pacifier hole by themselves! Meanwhile, arbitrary pacifier structure change will affect the structure, normal functions and usefullife of the pacifier.
Please select an appropriate pacifier according to your baby’s growth stage:
Type |
Aperture |
Age |
S (newborn ) |
Small round hole |
0-2 months old |
M |
Cross hole/medium round hole |
Applicable for babies more than 2 months old with strong sucking ability |
L (for flour) |
Large cross hole/large round hole |
over 6 months old, used when supplementary food is added |