I bought the chillow pillow because I was not sleeping due to hot sweats. I did not think it would work initially, but I was at the end of my tether with lack of sleep, so I bought one just to see.
The very first night I used my chillow pillow I slept all night, and have every night since! It keeps my hot sweats at bay from night time until about 6,30am. The only slight issue is that I cannot have a lie in at the weekends because it starts to warm up at about 6.30am which in turn wakes me up and starts my hot sweats up.
Perhaps I need 2 Chillo Plilows?
Anyway if you have problems like me the Chillow Pillow is worth a try.