Not ideal for use when sitting
Because the switch for it is in the back I found it being turned to lower settings or off when using it while sitting (during work) and also it was impossible to see what setting it was on without a lot of hassle. Also when sitting the cord comes out rather easily. I found the heat to be adequate when using the plug, but when using the USB with a normal phone charger it didn't get nearly as warm as I needed.
Rating: 3 stars