Slumberest MRU5PTS-S000-12A00 Premium Heated Mattress Pad, Twin Cotton Machine washable and dryer safe Simplify your life, machine washable and dryer safe Design Smart control preheats before bedtime and features 10 heat settings, optional auto-off function, five dimmer levels and ambient temp control Control your side with one heating zone on the twin and full size versions Exclusive wiring system senses and adjusts heat throughout the mattress pad for the highest peace of mind