You have to evaluate 3 properties. At least the other two made sense, thickness and strength which seem excellent so far. As for the heat, well, I have to give her a bath. Of course, this may improve by a few degrees with the onset of spring, but I don't buy a digital thermal imaging laser thermometer just to find out. Since there was no way to connect a power cord, I have to assume that the device is somehow solar powered? However, apart from not being able to deliver heat, I have to say that I like other cool features. For example, do what you actually advertise. This is very valuable!