The decision of which type of walker to select requires a careful thought on the following:  You should consider whether the user will be able to handle the wheels or not. Wheels and brakes need to be handled with care else it can lead to imbalances resulting in patient falls.  Depending upon the users height, weight and lifting capability you must select a model that is easy to handle and suits the built of the user.  The walker should be lightweight as there will be times that you need to lift or shift the walker away from uneven surfaces.  You must choose a walker that is fold-able if you are a frequent traveller.  Users who get tired frequently must select walkers with a seat.