I am not very experienced with high end headphones but the second I put these headphones on my head, I wanted them. They are made of the best materials, smooth leather ear pads, aluminium cups, stainless steel sliders and leather upon the top of the headband too. The leather used is supposedly lamb leather. There is plenty of treble and ear-booming bass. I think the aluminium ear cups help aid the sound as if you put your finger on them, they vibrate boldly with the driver and makes a feel which you just can't get with plastic. They offer great adjust-ability not only because of the sliders but how the ear cups swivel around onto your ear perfectly. However after around 3 hours of wearing they get slightly uncomfortable and so I then wear them on-top of my ears almost like on-ear when they start to get uncomfortable and carry on listening no problem. The cable is virtually indestructible except a bit of plastic broke on the end of one, it took my full body weight at the time don't ask how I managed that but the wire itself still works fine. The cable is constructed using materials you will find in race suits and are acid resistant. I would have liked to see a cable with Android compatibility. Also the locking system on the cable entry to the headphones is very handy! But this does prevent you from just using any cable, not only because f the lock but the jack itself is a tad smaller than 3.5mm making it unique to Momentum headphones. Overall very pricey but worth every penny!