The on/off button drops out of the outer blanket’s label.

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.