Graham Seed wrote
Rod Speed wrote

Still can't understand that, why don't you get friction from them ?

Not something I understand either, being a single sock man.
My gnarly feet get few blisters these days

Yeah, I only get them when breaking in a new pair of boots
and have been stupid enough to carry on regardless when
I should have broken them in more gradually.

yet double socked youngsters doing their
D of E have some evil looking ones.

Presumably because they don't break their boots in properly.

I don't know of anyone who gets blisters with properly broken
in boots tho I spose if you really abuse your feet by slogging
along all day with improperly handled boots that have got
completely sodden could easily do that.

I suppose it must reduce friction as the outer sock will
rub on the inner and the inner will rub on the foot less,

I'm not convinced that there is any friction with properly
fitting boots or shoes because the foot doesn't slide
around inside properly fitting boots or shoes.

but it doesn't stop it.

I've yet to be convince that it makes any difference to friction.

Sweat wicking, sure that is plausible and some do sweat a hell
of a lot more than I do, some drip with sweat and I don't sweat
much unless its very humid and stinking hot at the same time.