Can I use an electric blanket with a wool underlay/mattress protector?

Yes, although you probably won't need one, because of the great insulation properties of our wool. If you do choose to use an electric blanket, place it UNDERNEATH your wool underlay, directly over your mattress. This allows the heat to rise into the wool above and still gives you maximum comfort from the cushioning in the underlay. You will probably find you only need it switched on for a short while before getting into bed, as the excellent insulation properties of your underlay will keep you warm and comfortable the rest of the night.