I bought theese to retrofit the ones that came stock on my Superlux HD-668B headphones because I had read online that they were a straight, drop-in replacement, which they were.
Theese pads are very comfortable with a material that never feels obtrusive in any way, they keep you from sweating and from getting that well-known pain/ache around your ears from too much pressure/overuse. That's all gone now, and as an added bonus, theese actually improved the soundscape of my phones! They now sound more direct, defined and detailed than they did with the previous pads.. I think that alone was worth double the price of the pads themselves for an audiophile like me!