The Leifheit Ladder Saddle™ is made specifically for Leifheit Ladders.  Never before has there been a product that fits onto a ladder like this one  Perfect for holding cleaning materials, tools and needed items for when you are up on the ladder.  Saves lots of up & down time.  Even has a strap for holding a roll of paper towels.  Grips securely to top of ladder and is easily to take put up and take down.   Unique design, allows for the opening and closing and continued use of the ladder top plastic storage box.