I am very happy with these. I use them on my DT770 Pro's. The material is extremely soft and comfortable, so really nice to use. Fitting them was a little fidgety, there is a notch at the top where you can overlap the part that sits behind and holds the pads in place. Once you have around half in place, then you can turn the actual pad and hold it in place as you do so, then they will roll into place. They sit nice and tight on the headphones, once fitted. This adds to the noise insulation. I like them and would definitely recommend them.