Penelope onesie

The recommended age does not necessarily apply to everyone.
The fit varies depending on the height, weight, and body type of the child

S (3-6m): width of the body is 50cm/20inches, total length 36cm

M (6-12m): width of the body is 52cm/20.5inches, total length 38cm

L (12-24m): width of the body is 54cm/21inches, total length 40cm

Baby/kid age is an estimation of fit, not all babies/kids are of the same size, so please keep in mind dimensions of clothings, rather than age groups for a more accurate fitting