The packaging from K&H on this small pad leaves plenty to be desired. I would think it would be shipped flat but they roll it up like a towel and expect it to unravel without any problem....it doesn't. Needless to say, mine would also not heat at all probably because one of the elements got broken as it was pressure rolled into a tiny box. I have other K&H heating pads that work fine and were packaged with respect - don't know what happened to quality control or packaging design on this one. This is K&H problem ... nothing wrong with Amazon.com, they are still the best.