to all:Dave has used several types of walkers. The best one, , which has the most control, is a 3 wheeled waker, which folds for convenience, and has hand brakes (as on a bike) to help you stop, when falling, or freezin g We bought it in Las Vegas at a medical supply store. It was not easy to find. Here is the toll free number to call, and they will give you the information:Winnie Walker, Coral Gables. FLA Toll free number os 1 800 544 5155. This walker has been a great help to us, and we use is especially in shopping, and at home at night. Please call or Email if questions. 1 610 933 7666. The hand brakes are the key to its good service. lynn of dave n lynn good luck to all.