Finneskoe

Finneskoe (also Finnesko) is a soft hide boot used for cold climate travel. Because it is soft it will not freeze as solidly as thick boot leather and so can be put on relatively easy after being left overnight in subzero conditions.

Originally from Lapland, they were traditionally made from reindeer skin stuffed with grass (such as sennegrass) for insulation and water absorption. From 1890 they are regularly mentioned in accounts of polar travel

The name comes from the Norwegian Finn (Lapp) + sko (shoe). This type of boot made by the Sami people of Norway are called Skaller.

Traditional Sami reindeer boots, Thornews.com

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Wikipedia