67% Olefin, 33% Polyester Beautyrest - An American company with 16+ years of experience and zero product recalls. Each product undergoes 78 independent safety tests, surpassing industry standards and exceeding UL requirements for superior reliability ALL SEASON Olefin cool to touch fabric mattress pad with boost technology, 5 Heat settings and compatible with smart home outlets and automatic timers. A 1-hour PRE-HEAT feature can jump start the warming process and auto-shut off after 10-hours of use Queen and larger sizes come with dual zone temperature capability and 2 controllers to conveniently adjust each bed side independently based on everyone's personal comfort 1 Heated Mattress Pad: 39"W x 80"L + 15"D with all elastic to fit up to 18" thick mattress; controller cord 12ft, power cord is 6ft; DO NOT LEAVE CONTROLLER COVERED WHEN IN USE TO AVOID OVERHEATING Designed with your safety in mind, it is UL certified & independently tested to provide the highest safety standards. Featuring low EMF with a flexible wire for comfort and enhanced durability. Conveniently machine washable and backed by a 5-year warranty