I bought it to warm the foot area in my bed, since I have a certain sensitivity.
I placed it vertically on my king-size bed, only in the foot area.
It does an excellent job and I feel completely justified for this purchase.

It was really fantastic for the one month it lasted until one day it just stopped working. The lights on the control turned on normally but it never heated up. Fortunately, I got a refund, so I will try another one.

It is very good, but I have one main problem. There is no way to set it permanently on. That is, the maximum it can stay on is 6 hours. If you have a day off the next day and want to go into hibernation for a 12-hour sleep, you can't have constant warmth. If you are at home all day, you have to keep an eye on it so the timer doesn't run out. This is quite important for me, because the previous one I used (it didn't break, I just wanted to get a second one for my family and gave them the old one) had a switch off-low-high and I found it more convenient that way

It looks very good.
I would have preferred the width from 80cm to 90cm but for a single it is OK.
The 100W seem sufficient and it is the main reason I bought two (one as a gift) because the 60W that most usually have are not enough.
The timer with light indicators (2-4-6 hours) is very useful.
I hope it turns out to be as reliable as one I had for 10-11 years at 130W.

Very good underlay, heats up quickly and with the excellent controller you can adjust the intensity and duration of operation

Reliable, works very well. The feeling of the power cables is not bothersome, easy and fast. Value for money 100%

It works exactly as it says. I would easily buy the same again. I got 2 for the kids and I might get some for the summer house as well.

Very good and at an excellent price. It has very good durability, many settings, and indicators that are visible in the dark. The resistance is barely felt, but it also depends on how soft or hard the topper is.

Compared to the old one I had tried, some of which were low voltage 48v and all broke down within one winter, this one has held up exceptionally.

Note that it is not good to use it in combination with a memory foam topper, as the increased temperature changes its shape configuration (on the mattress)