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 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 rib knit. Theoretically the rib dress sock is for men - the sizes run to XL - but women buy these for themselves.  I am not going to tell you what to wear!

The other dress sock is a cable knit – and theoretically for women because XL is not available.  However, men do buy the cable ones for themselves 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+