Elderly people who use wheelchairs often suffer from cold legs due to the lack of body movements. Provides ultra-soft cushioning support for the neck and back, with adjustable heat levels for soothing stiff neck or back discomfort. Unfolds to become a cozy lap and shoulder blanket. Easily converts between a blanket and a pillow. control / smartphone app: five heat-setting levels & maintain constant temperature 15/30/60-minute timer *smartphone app can connect up to 6 KnitWarm products at the same time