When you have washed the outer blanket and you want to put it back on the inner blanket, pay attention to the following. Make sure you tie the 4 loops of the inner blanket, tightly to the outer blanket. If you do not do this, the on/off button may detach from the label. When tucking the on/off button back in (in the outer blanket's label), make sure there is no piece of fabric in between.