The perfect sock for dress shoes or under a business suit, usually £20, the triple pack is £55 instead of £60.  One pair on ... one pair in the drawer ... one pair in the wash ...   Perfect for business or travel (because they don't need laundering as constantly as for 'normal' wool socks... )

More info:

These socks have a much finer appearance than the original plain sole socks. Still 40% possum, 50% merino, fine cable knit.   Theoretically the cable dress sock is for women - but men do have these for themselves too.  (The sizing goes to L only.)  It really does not make any difference. 

The other dress sock is a fine rib knit – theoretically for men (with sizing to XL) - but women do have those too. 

The mix of possum-merino wool means that they do not in need of the washing machine so often (truly). Calf length.

Size guidelines:
Small - up to UK 5
Medium - UK 5.5-7.5
Large - UK 8-10
Extra Large - UK 11+