My husband purchased a Chilipad for me 3 years ago. I have been very pleased with its performance. There used to be a nightly thermostat disagreement, but now we are both much more comfortable. In the winter he uses the product to stay warm, and in the summer I use it to stay cool. It has worked very well for warm or cool settings. Ahhh, no more melting down in the middle of the night, and it saves on utility costs!