I  was skeptical but decided to try them. 
 I have had problems with hot flashes and night sweats, even with the fan on. The sheets arrived and I put them in the wash. They washed great.The  king sheets are as advertised. The sheets are  soft, silky satiny and I have not had the night sweats as with my cotton sheets. The only negative is the the pillowcases are not king  They are a queen.