People Heated Soapstone by the Stove and Took It to Bed—or into a Sleigh—as Portable Warmth｜皂石先在爐邊吸熱，再被抱上床或帶進雪橇當成可攜式暖氣

Hennepin History Museum explains that soapstone was preferred for warming stones because it heats quickly and retains and radiates heat; such stones were kept near fires or stoves, then used to warm beds or feet, or wrapped in fur or wool and carried in carriages and sleighs.

這是歷史博物館對一類家用物件與一件藏品的說明；不能把皂石保暖方式泛化成所有地區的冬季生活。