I LOVE these cushion type ear pads. they are so comfortable to wear. My old ones had just about given up the ghost and these make my old headphones look like new again and perform beautifully.
Sorry I can't say how difficult they were to put on because I got my wife to do that - as she has got tiny hands - but she had no problem with them whatsoever. So, if you've got hands like a bunch of bananas maybe you should ask someone a little more dexterous! :0)