I own many of these Senitek earpads. Their value for their price is beyond compare. These are HM5 clone pads that I literally cannot tell the difference between these and HM5 pads when they are on headphones. They come in leather, cloth, and velour. Right now they are selling on Amazon for $6 each. This is a fantastic deal to anyone that ones any over the ear headphone and needs a nicer pad. They are memory foam and made of good materials. I especially like the cloth ones for some reason, although the other two are great as well. They only come in black though and should fit any headphone that allows for earpad replacements. I haven't seen these this cheap before and have bought them previously at $13-$19 prices (which is still cheaper than the price for HM5).
If you need the extra large size like the extra large HM5 round earpads, the lyxpro has-30 replacement earpads are another clone for $6 right now too!