A solid choice — #10 of 31 Merino ranks #10 of 31 fabrics for hot flashes. It is a good fabric for this. Ranked on breathability and moisture management, penalised for warmth and weight. The top pick is Linen.
Merino measures 80/100 for breathability, 15% moisture regain, 55/100 warmth, at 180 gsm. For hot flashes, high breathability and strong moisture absorption decide comfort — and its higher warmth risks trapping heat against the skin.