Jack (The dominate male) is black and white, fairly coarse hair - not quite as stiff as a soft paint brush.
His brother, Capser, the white one, has hair that is a bit softer; while the girls (sisters) have very soft hair; almost like a fleece throw/blanket.
All of them have gotten their winter undercoat now, and it is dense and quite thick. When it’s cold, they all tend to sleep in a clump: keeping each other warm. A hand placed between a couple of them is kept quite toasty warm!
They just have such creepy eyes. ;-)