From the Knit Rowan website:
Knit this mens intarsia vest from Rowan Knitting & Crochet Magazine 55, a design by Brandon Mably using the ever popular yarn Cotton Glace (cotton). With a V neck and diamond pattern, this knitting pattern is for the intermediate knitter.

Finished width dimensions:
47: 50.5: 53: 56.5: 59: 61.5: 64: 67 cm
18.5: 20: 21: 22: 23: 24: 25: 26.5 inches

Yarn Information:
A - Dijon 739
6, 7, 8, 8, 9, 9, 9, 10 skeins
750, 875, 1000, 1000, 1125, 1125, 1125, 1250 yards

B - Twilight 829
3, 3, 3, 4, 4, 4, 4, 4 skeins
375, 375, 375, 500, 500, 500, 500, 500 yards

C - Garnet 841
3, 3, 3, 3, 3, 4, 4, 4 skeins
375, 375, 375, 375, 375, 500, 500, 500 yards

D - Blackcurrant 862
2, 2, 3, 3, 3, 3, 3, 3 skeins
250, 250, 375, 375, 375, 375, 375, 375 yards