Drive Medical All-Terrain Knee Walker features two 16″ front wheels and two 12″ rear wheels with enhanced traction effortlessly maneuver over gravel, dirt, grass, mulch, and uneven pavement. Heavy-duty, extended-wear disc brake enables quick stopping for unparalleled safety. Knee cushion with suspension is crafted for comfort to reduce potential pressure on shin and knee. Foldable steering column allows for secure, compact storage and transport. Complimentary water bottle and custom bottle holder make staying hydrated during travel easy.