ALUMINUM MATERIALS: Crafted from premium, thick aluminum alloy with an oxidized surface, our telescoping ladder is built to last. Reinforced nylon fiber in the plastic parts enhances the ladder's strength, supporting up to 330 lb/150 kg SAFETY & STABILITY: Our lightweight yet extension ladder supports up to 330 lbs. Each step features a double height-locking latch for safety, preventing pinching and allowing easy height adjustment