The sweater is an “oversize” model, which is described in three sizes in the pattern.
Dimensions and yarnsupplies are described in the table below.
The model in the picture is knitted in Landlust Sommerseide color 105.
Circular needles size 3.5 - 4 and 5 mm.

Tension:
20 stitches x 27 needles = 10 x 10 cm.
on needle size 4 mm in stockinette stitches.

Another suitable yarn is Einband from Istex. It is a 1-ply yarn and makes the sweater extra light. Like all 1-ply yarn, it tends to pull obliquely, but with Einband it seems to be minimal.

Otherwise, an always safe yarn choice is Blackhill Højlandsuld.

size chest lenght yarn Landlust Sommerseide
1 116 cm 68 cm 350 g
2 136 cm 74 cm 400 g
3 156 cm 80 cm 450 g