I keep hearing and reading that silk is this wonder fabric as it 'keeps you warm in winter and cool in summer'
It apparently keeps you warm in winter because silk is a thermal insulator. In other words it helps retain your body temperature when it's cold outside. Thus it is used in outdoor gear like hiking.
Then it is mysteriously able to forgo this attribute and be cool in summer because it 'breathes'
Breathes my arse. Currently sitting her with a silk scarf around my neck. My body is comfortable but my heck is dripping.
It can't be an insulator trapping body heat in winter but but in summer.
The only time I could see it keeping anyone cool in summer is if you are in a country where the ambient temperature is above body temperature as it will keep that temperature out