SOULWIT Cooling-Gel Earpads Cushions Replacement for Sennheiser HD650, HD660 S, HD660S2, HD600, HD6XX, HD58X, HD580, HD565, HD545, HD535 Headphones, Ear Pads with Ice Silk Fabric - Dark Coffee

I wasn't sure if these would live up to the high standards of Sennheiser, but I must say that I was pleasantly surprised. They look and feel like they're very high quality and I can wear them for long periods without getting uncomfortable. Honestly they kind of feel better than the originals that came with my 660S.

I've purchased my fair share of 3rd party ear pads and these are definitely the nicest I've tried. The material feels really nice and they're super comfortable. No complaints

These follow the same profile as the stock pads at nearly half the price. In my experience they are less stiff and compress slightly more than the stock pads. The inside material feels similar to what you might find in a gel wristpad for your keyboard. I would not suggest these provide any type of additional cooling effect in extended use, although the gel material feels cool to the touch when you first put them on. The snap-in mechanism is not as refined as the stock pads but it works and they remain attached properly afterwards. These pads do not seem to change the audio profile of the headphone very much compared to stock pads.I would buy these again.

Fit perfect and keep the space correctly .. my ears feel fresh again .Simple to replace .. it has a water cooling system .. not sure why … but hey easy to replace and is very nice feeling material

Fits a Sennheiser HD660s very well. Very comfortable and soft. Not sure that I will be dripping water onto the foam, btu they say you can to make them cooler. No experience with that.

Maybe I got a bad pair or wasn’t doing something right but I was unable to get a good seal with these and everything was blown out, bass was pushed to the back and almost inaudible. Bought two different pairs because I was warned these headphones are “pad sensitive”. I didn’t use these long enough to notice any cooling effect. Didn’t like the firmness or fit on these as it just seemed lacking in cushioning. The other pair was more of a leather for the outer but they had much better fit, more cushion and sealed much tighter making for a bass response that rivals the factory pads if not sound tighter and punchier (don’t have factory pads nor do I plan on shilling out the money to get a pair) in my opinion I would stay away from these.

These are great for me. They are the first pad I’ve tried on my 6xx’s that haven’t negatively changed the sound. The hd 600s and all the subsequent versions are notoriously pad sensitive and many audiophiles claim the stock pads are the only way to go but $50 or more is way to much to pay for those cheap pads that don’t perform like new for very long. These pads did change the sound slightly. Made the sound ever so slightly more V shaped than stock (slight boost to lows and highs) but not in a bad way. They are very comfortable to me but if you are sensitive to your ears touching the foam in front of the driver you might not like these. They compress more than the stock pads but this also has the added bonus of higher volume because your ear is closer to the driver. The cooling surface is comfortable but isn’t mind blowing cool or anything. I really like these and will be buying a few back ups in case they go out of production.

These were warmer than the stock pads, I had to send them back.