If you can never get the temperature quite right and you are a person who struggles with being hot one minute and cold the next, this is for you. It provides a more surface heat I would say than a deep long lasting heat like a traditional blanket. You do find that you will feel very snug without thinking your are cooking as the heat emitted is very gentle. Great all night setting that gives a small amount of heat for 9 hours. Fitted a SuperKing sized mattress very well.