It is a simple topdown sweater. Try on as you go! The gauge: 16 sts x 18 rows in the pattern (Chart 1) = 10 cm x 6.5 cm
Sizes (bust circumference): XS (80-82), S (84-86), M (92-96), L (100-106), XL (110-116).
When looking for a substitute yarn, please note that the weight is not all: the fiber and the way it is spun is most important. Aade Lõng is a rough yarn with loose twist and knits up differently than for example tightly spun merino yarns. For instance, Bably Alpaca Silk by Drops is suitable.
I am most grateful to Lina who suggested a version with a collar, suitable for men.