This manager is a bad design - here was either not thinking, or you are aware of the disadvantages accepted in order to produce cheap and thus maximize profit can. The rungs are made of thin metal tubes - is to use barefoot downright painful, as they cut. In addition, they are powder-coated, so have a smooth surface - and are therefore very slippery. Our children they no longer want to use. That could be much better - a pity ...