Behold the power of gravity. The instructions are easy with the Saris Bike Bunk Two-Bike Storage Rack. Lean. Okay, well you will need to assemble it first, but once you have your Bike Bunk put together the next step is finding a clear wall. Adjustable arms move up and down to fit different size bike frames. Sleeves on the arms and cushioned pads protect floors and walls from damage. No permanent mounting required. How easy is that?