From the Knit Rowan website:
This classic boys V neck cardigan features in Little Rowan Cherish. Designed by Linda Whaley in Summerlite DK its garter stitch trims make it suitable for the less experienced knitter.

Finished width dimensions:
at bottom hem
24: 25: 26: 27: 27.5: 28.5 cm
9½: 10: 10: 10½: 11: 11½ inches

Yarn Information:
¾ sleeve version photographed with Rowan Summerlite DK in Mushroom 454
2, 2, 2, 3, 3, 4 skeins
284, 284, 284, 426, 426, 568 yards

Long sleeve version photographed with Rowan Summerlite DK in Linen 460
2, 3, 3, 3, 4, 4 skeins
284, 426, 426, 426, 568, 568 yards

Extras:
QTY (4: 4: 5: 5: 6: 6) 14mm buttons.