Foldable Rollator Walkers with Seat for Seniors, 450 lb Capacity, 8" Wheels, 18" Big Seat, W3952P384274Industrial grade steel frame with dual crossbars supports 450 lbs. Precision 50mm wide alloy tubing (1. 4mm wall thickness) features interlocking joints and stress tested welds, Heavy Duty Aluminum Frame with Triangular Load Bearing Structure, Significantly enhances product safety and stability. 6 Position Adjustable Ergonomic Handle Instantly adapts from 5. 5' to 6. 5'user heights with single button adjustment, Anatomic thumb rest + non slip texture