Adorable and practical, these "fancy pants" go from newborn all the way to a size 10!

 

Size 1 = Small (0-6 months)
Size 2 = Medium (6-12 months)
Size 3 = Large (12-18 months)
Size 4 = Xlarge (18-24 months)

Size          Weight         Approx. Age
1               22-24             1 years
2               25-28             2 years
3               29-32             3 years
4               33-36             4 years
5               37-41             5 years
6               42-53             6 years