A sidewalker mobility aid for use in assisting an individual in walking. The device is configured to be used with one hand, on one side of the body of the user, rather than out in front, like a traditional walker. The sidewalker has features that place it between a cane and a walker, in terms of benefits provided. The device provides more lateral resistance (stability) than a typical cane, but less than a traditional walker, while having collapsible features that allow the device to take up less space than a traditional walker.