good for the price
So this is a very economical heating pad.  It works very well, the construction could be better.  For less than $5 it really is worth the money.  Unfortunately, I turned my chair too fast and too far and broke the cord in half at the power button.  I'll be ordering another as it's the only USB heating pad I've been able to find.  However, I would be willing to pay more for a better design.
Rating: 4 stars