Not recommended — #30 of 31 Polyester ranks #30 of 31 fabrics for hot flashes. It is a poor fabric for this. Ranked on breathability and moisture management, penalised for warmth and weight. The top pick is Linen.
Polyester measures 30/100 for breathability, 0% moisture regain, 50/100 warmth, at 140 gsm. For hot flashes, low breathability and limited moisture absorption decide comfort — and its higher warmth risks trapping heat against the skin.