Back is a fully open back-buttoning sweater for sizes birth through 6 months. 12-24 month sizes have a henley-like slit at the top back with just 2 buttons.

Sizes:
Naissance (3 mois, 6 mois, 12/18 mois, 24 mois)

Yarn Needed:
A: 3 (3, 4, 5, 6) balls
B, C, D: 1 ball each

Also Needed:
5 (5, 5, 2, 2) boutons