Stable, functional, sometimes moves slightly in on itself

We bought the shelf for the bath as easy parking for shampoos etc. They can be pulled out without problems and also carries easily as many gels and what else they can just take place as standard. Every few weeks you have to pull apart a little bit, so that it is also a maximum undressed and so as much surface rests on the tub, but it's done with a handle and otherwise it makes great job again.