Pecute Pet Heat Pad Small 32x40cm, Constant Heating Safe

I don’t heat the kitchen-living room to save electricity/gas bills, and can’t let my cat sleep with me in the bedroom because he destroys things (don’t ask).
So for winter, I got the small-size pet heating pad for my cat, as it perfectly fits his “Duktig” IKEA pine cat bed (sold as a doll bed) which I keep beside the computer desk by a floor-to-ceiling window. The heating pad arrived yesterday afternoon.
As soon as I put it on the cat bed and covered it with his little bedspread, kitty tested the chew-proof cord by chewing on it. It is indeed, cat proof .
Then he sat on the bed and looked down at the pad, washed himself, cautiously lay down on it; where he stayed 3 hrs straight, curled up in a ball.

Then I moved it over to the IKEA Poang chair where he spends the night. I put it up against the back, under the plush throw I keep on the chair. Kitty migrated there close to bed-time, and sprawled across the chair full length, with the pad warming his back and side. When I turned out the lights to go to the bedroom downstairs, he was asleep bonelessly on his back with hind feet against the chair back facing west, and the front half of his body facing east, with a look of bliss on his face.
When I wanted to sit in the chair to read a book earlier today, I had first to move the heating pad to the cat-bed so he would surrender the chair.
According to the cat, this thing is pleasure on steroids. Now I don’t feel guilty leaving him up here at night with no heating.
My only criticism is that both plush zipper covers are in dark colours.
Suggested Improvement: There should be a dark one and a light one (cream or beige?), as my entirely white cat (he’s not called “White Supremacist Cat” for nothing) will leave both covers coated with white hair.