This is a dolman shaped vest/tunic. The back and front are knitted from the center outward shaping the v-neck and armholes. The pattern for the front and the back are charted ( not written).
This is a completely seamless construction: all the side and shoulder seams are made by the 3-needle binding off method, even the waistband is seamless (it has step-by-step photos).
The pattern has one size. It will fit almost any size (from Medium size up to 6X Plus size). The critical measurement is a lower edge. You have to measure the circumference where you would like to place the elastic band (usually it is above your hips). If your measurement is more than 44”(110cm), you can make it as a tunic - with the side splits and without waistband (in this case you will find the instructions in the pattern).