From the Knit Rowan website:
Knit this boys round neck slipover from Little Rowan Cherish. Designed by Linda Whaley in Super Fine Merino 4ply its all over cable patterning makes it suitable for the knitter with some experience.

Finished width dimensions:
at underarm
24: 25.5: 26: 27: 28: 29 cm
9½: 10: 10: 10½: 11: 11½ inches

Yarn Information:
Photographed with Rowan Super Fine Merino 4ply in Sky 264
2, 2, 2, 2, 2, 3 skeins
362, 362, 362, 362, 362, 362, 543 yards