Evolution Series Walkers are excellent, with top ratings in stability and durability. They are often recommended by therapists for individuals of higher weight as the weight bearing capability is up to 400lbs. This walker is stable, so excellent for users suffering from neurological conditions such as Multiple Sclerosis, Parkinson’s and stroke conditions. The rigid frame allows the addition of the specialized Arm Trough System, for those individuals unable to use a standard walker handle. The rigid back support also provides for safety and comfort. Construction: Made up of cold rolled steel tubing as with mountain bike fabrication, these walkers are strong. Fasteners are of stainless steel and are plated against corrosion and the frame paint is UV protected. The plastic parts are designed for Canadian temperatures, up to -40 degrees.