I would not have worn anything like this a few years ago. Too much like my late Liverpudlian father-in-law in his acrylic cardie.
I wisely invested in a Woolrich half-zip about four years ago and it gets worn during the depth of winter.
Ireland's Eye do a nice version. Merino, I think, but looks not unlike Shetland to my untrained eye.
'Comfy', as Big Tony might have it.
for me the most vile garment ever devised! maybe worse than boat shoes.
The most vile? Truly? I shall have to ponder this awhile, and see if I can come up with an alternative.