Two button walkers
Basically, a walker is a frame which the user takes with them and uses for support when their strength, stamina and/or balance while walking has been impaired by some condition or injury.
To use a conventional walker, step into the walker, move the walker forward, step into the walker, move it forward etc. Disadvantages of this procedure are maintaining balance while moving the walker, some users may not have the strength to lift the walker, changing direction while walking requires the user to turn the walker while lifting and moving it forward. These models also have optional skis for sliding or wheels to convert the walker to a 2 wheel walker.