3 wheel rollators (this guy) Wheeled rollator with seat and brakes With Seat
A three wheel rollator-wheeled rolling chair is compact, lightweight and easily transportable. It folds easily and will fit into any vehicle's trunk or back seat.
Rollators have hand brakes that stop them from rolling away. By lightly pressing on the handle, you can engage the brake.
Stability
A three-wheeled rollator with storage with seat is a light mobility aid that's easy to move and can be used indoors as well as outdoors. It has a wheel in the front and two in the rear, making it easier to turn sharply and fit through narrow doorways as compared to the typical rollator walker type 3. It is also easier to fold, and it can be tucked away in a car seat or trunk without the need for tools. The handle height can be adjusted to fit the needs of the user. The large wheels work well on various surfaces, and the hand brakes with loops keep the device from accidentally rolling away while stationary or parking.