3-button cardigan can be knit with long or short sleeves. Bonnet sized from birth through 2 years only.

Sizes: to fit chest / actual measurements
0-6 mo (chest size 16”/41cm) / (17”/43cm)
6-12 mo (chest size 18”/46cm) / (19”/48cm)
1-2 yrs (chest size 20”/51cm) / (21”/53cm)
2-3 yrs (chest size 22”/56cm) / (22.75”/58cm)
4-5 yrs (chest size 24”/61cm) / (24.75”/63cm)
6-7 yrs (chest size 26”/66cm) / (26.75”/68cm)

Yarn Requirements: Fingering weight, 50g balls
Long-sleeved cardigan: 2 (2, 3, 4, 4, 5) balls
Short-sleeved cardigan: 2 (2, 2, 3, 3, 4) balls
Bonnet: 1 (1, 1, -, -, -) ball

Also Needed:
3 buttons for cardigans
1 button for bonnet

Sirdar website link: Snuggly 4 Ply 1902