Each child is differentso we cannot guarantee that every Filou of the same age will wear the same size. But below you can find a general overview. We approximate the sizes according to age. Tip: at the beginning of the season, we recommend buying one size more than the child is currently wearing. <div><br></div><p>0 months= 50cm&nbsp;&nbsp;&nbsp;<br>1 months= 56cm&nbsp;&nbsp;&nbsp;<br>3 months= 62cm&nbsp;&nbsp;<br>6 months= 68cm&nbsp;&nbsp;&nbsp;<br>9 months= 74cm&nbsp;</p>