At first I was very satisfied with this pillow, but ultimately very disappointed. The first pillow that I bought, broke down after ung. Two weeks after the second ung. 3 weeks. I can not imagine that I was the me - one evening, after it stayed for a while warm, and I was on the pad is simply turned cold, and the light on the switch is assumed. I bought without experience the pillow by Elektroshop Wagner. Otherwise it is comfortable, is quickly warm. I think the heat ausrechend, but must also accept other reviewers that the pad is not very warm.