Cold Resistance

There was no wind, but the temperature was eight below due to the emptiness of the sky.
...
	Priad was clad in an insulated bodyglove, boots, mailed ice-gloves and a hooded mantle of snow-leopard furs. The brothers of Damocles enjoyed no such luxury.

They came in sight, jogging hard across the flatness of the glacier shelf. Bare feet, aching from contact with the ice, bare legs and arms and hands, simple chitons of thin, red linen. They wore frost-shawls, tied like sashes around their waists, supporting small pouches of simple utility items and bronze ice axes.
...
	One by one, the men reached Priad. The drill was simple enough: each man had to hack out a block of ice with his axe, then run with it down twenty kilometers of the glacier. Who came first and who last was not the question. The block simply had to weigh in excess of thirty kilos by the time it was measured at the finish. There was no weigh-in at the start. Each man had to gauge the weight of his block by eye and common sense, allowing for that part of it that would be lost to melt during the course of the drill. Underestimate, and the block would be less than the crucial thirty kilos by the time it was delivered.

Brothers of the Snake pgs.279-281