The McKesson 4-Wheel Rollator features an exceptionally strong, steel frame construction safely supports users up to 400 pounds. Plus, its ergonomically-designed, orthotic handles are easy-to-grip, reduce hand pressure, and are adjustable to accommodate a user's height and preferences while its oversized padded seat and backrest are made of a strong polyurethane material for durability, have a contoured design for ergonomic comfort, and provide cut and split resistance to prevent rubbing and irritation; and the hinged padded backrest can be folded up, down, or removed. The special, deluxe, loop-lock system (made of internal aluminum casting for easy-use and safety) operates like a bicycle handbrake to slow down or temporarily stop and easily locks into a stationary position by pushing the handle into the down-position. Swiveling, 8-inch caster wheels with soft-grip tires are non-marking and add stability and control for indoor and outdoor use, and this unique rollator also has a hinged, padded backrest that can be folded up, down, or removed; a self-threading knob that allows easy, tool-free handle height adjustment; as well as a a seat that folds up to conveniently access the spacious, vinyl carry pouch below the seat for transporting personal items with added privacy and security.