I-Class Single-release Folding Walkers - Weight capacity : 300 lbs, Youth: Height adjusts 25(3/8) x 32(3/8)" , Fits users 4'4" to 5'7", Lifetime limited warranty Open and close with minimal effort; easy to lift and maneuver. Ergonomic release button allows walker to be folded with one hand. Button provides visual and audible locked cues. PVC hand grips for comfort and durability. Equipped with patented anti-rattle system.