I still can't tell whether that towel is supposed to be composed of leaves or leather.
It looks to me like this garment is supposed to be made out of bast.
In the olden days, in real life, bast was used as a substitute for leather.
Bast is basically the inner bark of a tree. In cold northern lands you get it mostly by skinning birch trees.
It was particularly popular in places like Russia where the average peasant was too drunk to catch an animal to skin but was still sober enough to walk into the nearest tree, which would probably be a birch tree. There are a lot of birch trees in cold northern lands and many of them have trunks that are white like the snow.
Incidentally, birch trees can be tapped for their sap. This sap can be fermented into some pretty mean hooch. This is a godsend if you live in a land where it is too cold to grow the grain or grapes that are used by more sophisticated southern folk to ferment alcohol and get blind drunk.