As with so many here and I have had bad experiences with this in my opinion poorly conceived system: When the mop head is wet and heavy, it falls out of the holder. If drying is the two parts separately (with difficulty, but it wants the manual), the mop head afterwards no longer fits on the base plate. After complaining at Leifheit they sent me a new base plate, because supposedly shrinking the mop head during drying, unlike the base plate again. De facto it was probably the other way around, but I do not matter now - I've had enough. Never again Leifheit!