Foam cushioning/padding is non existent by design , but the rubber of the seat does flex and move when you put your weight onto it. You do feel the flex and absorption over bumps in the trail and the rubber soaks up vibration really well.
If you are a fan of the traditional Brooks saddle but don’t want to ruin one with riding in mud and wet weather or worry about the upkeep of the leather then the Cambium is well worth trying out. Some Brooks dealers have demo saddles you can try out.
Compared to the SDG its heavier more expensive and in my case your backside needs to adapt to it (it is a brooks after all) so might not be instantly comfortable but I ride a lot with it and don’t even think about it which means its working just right… It should last a lot longer than a SDG too.