It heats up very well and the fabric feels very nice. The downside is the length of the elastic straps. If you have a mattress that is 30-31 cm tall, the straps are not long enough to secure it, as they unfortunately only have a length of 31 cm. Unfortunately, I had to use it without the straps, luckily it doesn't slip under the sheet

I have another mattress of a different brand (I think IQ, although I'm not sure). The only negative thing I have to note about the Human mattress is that it takes quite a while to warm up. The other one warms up much more and much faster. Anyway, the way I use it is to turn it on half an hour before sleep and turn it off when I lie down. So it's convenient that the other one warms up quickly. I haven't washed it yet, so I don't have an opinion.

For 16 euros, it is really good. It heats well and quickly. It has 5 temperature levels, where the first and the last are 0, so you don't need to double-check if it is off, if you have moved the switch to one end or the other, you are good. I haven't tried if it can actually be washed (nor do I intend to tell the truth), but it has a detachable cord.