This pattern is a fully buttoned back-fastening sweater for sizes premature through 6 months. Size 12/18 months has a henley-like slit at the top back with 2 snaps/pressions.

Sizes:
Prématuré (naissance, 3 mois, 6 mois, 12/18 mois)

Yarn Needed:
A: 1 (1, 2, 2, 2) balls
B: 1 (1, 1, 2, 2) balls
C: 1 (1, 1, 1, 2) balls

Also Needed:
5 (5, 5, 5, 2) pressions/snaps.