Earpad is not significantly thicker than the official originals.
Very plush confirming foam. Leather is soft to the touch, like "Italian leather" sold for home couches.
I did not notice an increase subbass despite the solid leather seal. But I did experience more punchiness too the bass.
Mids and treble stayed the same.
Recommended eadpads. No cons. It is as thick as the original, so it behaves similarly.