Biddeford Heated Mattress Pad - Twin Size Number of Pieces: 2 Includes: 1 Controller Features: Automatic Shut-off, Lighted Control Number of Heat Settings: 10 Number of Hours to Auto Shut-off: 10 Cord Length: 20.0 ' Fiber Content: 100 % Polyester. Thread Count: 180 Weave Type: Plain Bottom: 100% polyster, top (2 Layers): 50% cotton, 50% polyester, polyester wadding