Not a perfect fit for the QC35. Slightly larger by 1mm in diameter. Significant enough that there are ridges formed on fit that will never go away.
Have placed a few photos for further inspection.
Photos 1 & 2 shows the consequences of imperfect fit. Photos 3 shows the comparison between original worn (left) ear cushion to replacement non-oem ear cushion bought (right).
Buyers be wary.
Impression on cushion and fabric lining - not as cooling as originals (probably might need some wearing in). The ear cushion (note: not referring to the contact insertion band) itself is smaller in diameter than originals, so these would be better suited to people with smaller faces. It just barely fits over my ears where as the originals gave some clearance and hence further breathing room I.e. originals are more comfy for bigger heads.
For the price, you get what you pay for - in my opinion this deserves a 2-2.5 stars.