This garment looks a little complicated, but it is simpler than it looks.
It is made by combining three rectangles, each with a different stitch pattern. The stitch patterns for the two bigger rectangles are 4 row patterns and all wrong side rows are worked in purl. The smaller rectangle is a 1 row pattern.
The garment is wearable in two ways. (Try it upside down)

Skill Level
Intermediate

Sizes
S (M, L, XL) Shown here Size S

Finished Measurements
25 ½“ (27”,29”, 30 ½ “) between armholes

Yarn
780 (850, 1000, 1110) Yards of Sport weight yarn

Tools
US 8 (5.0mm) 24” long circular needles
US 9 (5.5mm) 24” long circular needles
Size G (4.0 mm) Crochet hook - for armholes
Locking Stitch Markers
Darning Needle

Gauge
19 sts = Approx. 4” in Stitch Pattern A and Stitch Pattern B with smaller needles