Soft Heat Wide Ribbed Electric Heated Warming Body Pillow is probably one of the most comfortable and unique body pillows you'll ever have the luxury of snuggling up against. At an incredible 21 by 53 inches in size it's meant to give you the full body support and quality of rest that you crave, but that's just one of the wonderful features of this pillow. Within the plush wide ribbed removable zippered cover is the patented Safe and Warm low-voltage warming technology to give you a body pillow that not only supports, but also warms you. This low-voltage body pillow includes a small power supply box that changes 120 volt AC home current into non-hazardous low voltage DC current (very similar to a battery) to provide warmth, protection and safety even if the pillow becomes wet. Unlike other warming body pillows with their bulky wires, the heating wires in the Soft Heat pillows are so small, they are virtually unnoticeable and also give more of an even heat meaning-no hot or cold spots. With an automatic pre-heat and hold feature you simply turn it on and the pillow will warm up on HI until it reaches the temperature that you pre set your dial on and then adjust itself to hold it there. For your convenience it has an automatic shut off feature that will shut the pillow off after 10 hours just in case you forget. It also comes standard with built in over-temperature protection for that extra bit of safety and piece of mind. Easy care feature means that it's machine washable and dryable and will not stretch, pill or shrink giving you many years of warm, luxurious and supportive use.