Only the garbage bag is fasten. Unfortunately, there is currently no description for how to optimally secure the garbage bag so they will not slip into the bucket. Had to try something and guess that I'm doing it right now.
The trash bag hanging loosely down the drain and is held only by an upper insert ring.
Lowering system works very well, ie by pressing the foot pedal, the lid closes slowly and does not fall just on. Therefore the bucket closes very quiet.
Negatives:
There are no matching trash bag with 40 L.
Either one takes 35 L garbage bags that are a bit too small or you have equal access to 60 L, but again are too large.
I decided with the 60 L garbage bags, because the 35 L garbage bags could tear it and bend the upper mounting ring slightly. The 60 L bag reaches to the bottom of the bucket and you can make some extra garbage in.
Because there is no appropriate trash bag for 40 l bucket, a point deduction.
Otherwise highly recommended.