The vest is knitted in the round and steeked for armhole and neck. It is knitted straight up at the armhole, which gives a wing sleeve / poncho effect. The shape is relatively wide, and the size can be chosen based on how tight you want the vest to fit.
The measurements are the width of the vest.
The model is knitted in Jamieson of Shetland Spindrift in eight different colors. In total 15 - 17 - 18 - 18 balls of 25 g for the different sizes. The vest is knitted on needles 3.5 mm, the rib edges on needles 3 mm.