S (3-6m) chest 46cm/18inches all around, total length 38cm
M (6-12m): chest 48cm/19inches all around, total length 41cm
L (12-24m): Chest 50cm/20inches all around, Total length 44cm
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
