By Far the best engineering, solves every issue with a regular ladder I ever faced. I am amateur handyman. Work all around the house. I am an engineer by profession. Don't have 2k to buy the ladder but I can see and know for sure this is by far the best design and engineering. If I must take a ladder to MARS this would be the only one. One day i will buy this one. I never let my wife go up a ladder but this one I would.