The Trackmaster Indoor/Outdoor Powered Wheelchair is designed not only to go through snow, sand, mud, gravel, grass, even curbs outdoors, but also can be used indoors because of its narrow width (only 30 inches). The unit is powered by two high-torque 1 HP motors. The machine has a low center of gravity that reportedly keeps it stabilized while in motion. The tracks are made of tire rubber; and its round-tube frame allows for attachment of any standard wheelchair or bicycle accessories (e.g., seat back, cup holder, etc.). Optional dual 900 lumen flood lights are available.