Gauge: 22 stitches and 30 rows = 4 inches in stockinette stitch
Needle Size: US 6 (4mm) and US 8 (5mm) straight and double-pointed needles
Yarn: Worsted weight (UK Aran / AU 10 ply)
Materials
Main Color (MC): 5 (6, 7, 8) skeins of Worsted weight yarn
Contrast Color (CC): 1 skein of Worsted weight yarn
US 6 (4mm) straight needles
US 6 (4mm) double-pointed needles
US 8 (5mm) straight needles
US 8 (5mm) double-pointed needles
Cable needle
Stitch markers
Tapestry needle
Glossary
K: Knit
P: Purl
YO: Yarn Over
SSK: Slip, Slip, Knit (left-leaning decrease)
K2tog: Knit Two Together (right-leaning decrease)
PM: Place marker
RM: Remove marker
Pattern
Front
With the MC and US 6 straight needles, cast on 90 (100, 110, 120) stitches.
Work in K1, P1 ribbing for 1 inch.
Switch to US 8 straight needles and begin stockinette stitch.
Keeping 10 (12, 14, 16) stitches at each edge in seed stitch, work in stockinette stitch until the piece measures 10 (10.5, 11, 11.5) inches from the cast on edge.
Back
Repeat steps 1-4 of the Front.
Sleeves
With the MC and US 6 double-pointed needles, cast on 44 (48, 52, 56) stitches.
Work in K1, P1 ribbing for 1 inch.
Switch to US 8 double-pointed needles and begin stockinette stitch.
Increase 1 stitch on each side every 4th round, 5 times. (54, 58, 62, 66 stitches)
Work even in stockinette stitch until the sleeve measures 16 (16.5, 17, 17.5) inches from the cast on edge.
Transfer the stitches onto waste yarn.
Work the second sleeve in the same manner.
Neckband
Pick up stitches along the neckline with the CC and US 6 straight needles.
Work in K1, P1 ribbing for 1 inch.
Bind off in pattern.
Assembly
With the right sides facing, sew the shoulder seams using the mattress stitch or preferred seaming method.
With the right sides facing, sew the sleeve seams using the mattress stitch or preferred seaming method.
Set in the sleeves, aligning the underarm seams with the side seams, and sew in place.
Weave in all loose ends and block the sweater to the desired measurements.