Thees shorts are so 40s with their high waist.
As long as you know your waist size att the bellybotton you won't have any problem with finding the right size for you.

Wallin - SE

great fabric...cut weird and not quite a 42...more like a 40S in the sleeve length

Kowalski - US

Great color, cut. I am built like an older model person (36-38s) and I ordered the 38. Fits like its supposed to chest/sleeves and very comfortable.

Cleaver - US