The Beautyrest heated mattress pad contains Secure Comfort technology, which is designed to virtually eliminate Electromagnetic Field emissions. The soft flexible wires and quilted top ensure your comfort. The fitted skirt is designed to create a perfect fit and fits up to an 18-inch mattress. Beautyrest's heated mattress pad is machine washable, with a 10-hour auto shut off, and 5 setting temperature control. Twin, Twin XL, and Full size have one controller, Queen, King, and Cal King size have 2 controllers. Includes manufacturer’s 5-year warranty. Twin/Twin XL: 1 Heated Mattress Pad: 39 in x75 in +15 in Full: 1 Heated Mattress Pad: 54 in x75 in +15 in Queen: 1 Heated Mattress Pad: 60 in x 80 in+15 in King: 1 Heated Mattress Pad: 78 in x 80 in +15 in California King: 1 Heated Mattress Pad:72 in x 84 in+15 in • Eliminates electromagnetic field emissions • Soft flexible wires • Quilted top • Fit mattresses up to 18"" in height • 10-hour auto shut off • 5 temperature settings • Controller works with smart home outlets and automatic timers, 1 for Twin and full size, 2 for queen and king size Imported Material & Care Polyester Machine washable