Already when unpacking the blanket, I noticed that in the ceiling a sort (crackling) plastic layer is incorporated and the heating wires seemed quite thick. This was not the case with my old electric blanket. After having placed the blanket under the fitted sheet and one sample was was clear: If not !!!! They clearly felt the heating wires and with every movement the thing crackles. Without having once warmed up, I grabbed the blanket back together and sent back.