The vest is designed to be incredibly versatile. You can wear it two-ways, so it really doesn’t matter how you put it on!
The pattern is written for 2 main sizes in general, since it fits most body types with its positive ease.
The sleeves you can wear elbow or wrist length, roll them or really, do as whatever pleases you and the way you find most comfortable.

The main body of the vest is worked flat on circular needles to accomodate the large amount of stitches. The sides are seamed and the sleeves are worked on double pointed needles in 1x1 rib by picking up stitches along the edge.