The product is very good. The heating is very satisfactory. I would have liked it to be a bit larger, although usually heated underlays do not fully cover the entire bed. I am satisfied with my purchase, and the price was very good!

Good in its operation, but it didn't come with straps in the package to secure it to the mattress. I made my own solution with simple rope.

I don't know why I didn't have it all these years... it helped a lot with back pain..
With a construction (cable) male to two female, I made it work from a socket in the wall... and not from one that requires one for each side.
An hour before you go, with setting 3, all the moisture that might be there leaves, and you get into a warm bed.. then at setting 1 to 2 all night long... even at setting 3 it has happened not to bother me...
It suited me very well after a few tests in the following arrangement..
Mattress, then a fitted sheet that grips the corners, on top of it the electric underblanket... a sheet to cover it so you don't have direct contact.. and when it starts working, the blanket or some duvet is laid over it..

It doesn't heat up either too much or evenly; one end is hot and the other is cold. How is that possible? Do you know anything more? Thank you