Add some heat to your seat with this bun-warming addition to your camping chair, stadium seat or anywhere else you sit outdoors when the weather is chilly. The Heated Ad-On uses woven heating technology and a rechargeable battery to keep you warm for hours. The unit attaches with hook-and-loop fasteners and fits most seating surfaces. The Chaheati® is cordless, lightweight and collapsible so you can take it anywhere. Its rechargeable heating system has four settings and provides up to six hours of heat.