Upvote:2
There doesn't seem ot have been any technological advance between Ross's expeditions and later (ant)arctic and antarctic expeditions of the late 19th and early 20th century. The clothing was predominantly wool underclothes for warmth, supplemented with canvas over coats for protection from the wind.
This worked surprisingly poorly, in the Antarctic particularly, because of the extreme dryness of the Antarctic climate. It was usual to don wet (from sweat)frozen overcoats each morning that only slowly thawed through the day to allow greater freedom of movement, which then refroze each night.