Charles Ellicott Commentary Proverbs 31:21

"She is not afraid of the snow for her household; For all her household are clothed with scarlet." — Proverbs 31:21 (ASV)

She is not afraid of the snow.— Not uncommon in wintertime in Palestine and the neighbouring countries. (Compare to 2 Samuel 23:20; Psalms 147:16.)

All her household are clothed with scarlet, which by its very colour suggests warmth and comfort.