Leaflet has instructions for both v-neck and round neck styles.

Sizes: to fit chest / actual measurements
1-2 yrs (chest size 22”/56cm) / (24”/61cm)
3-4 yrs (chest size 24”/61cm) / (26”/66cm)
5-6 yrs (chest size 26”/66cm) / (28.25”/72cm)
7-8 yrs (chest size 28”/71cm) / (30.25”/77cm)
9-10 yrs (chest size 30”/76cm) / (32.75”/83cm)
11-12 yrs (chest size 32”/81cm) / (34.75”/88cm)

Yarn Requirements:
The suggested yarns are interchangeable. Choose one yarn per project.

V-neck Cardigan
Wash ‘n’ Wear: 2 (3, 3, 4, 4, 4) x 100g balls
Country Style: 2 (2, 3, 3, 3, 4) x 100g balls
Denim Tweed: 3 (4, 5, 5, 6, 6) x 50g balls

Round-neck Cardigan
Wash ‘n’ Wear: 2 (3, 3, 4, 4, 4) x 100g balls
Country Style: 2 (2, 3, 3, 3, 4) x 100g balls
Denim Tweed: 3 (4, 5, 5, 6, 7) x 50g balls

Sirdar Link: Sirdar Wash ‘n’ Wear Double Crepe 2175