Grip the top edge of the foam pad on the headphone cup. The edge of the foam pad is pulled over a plastic lip.
Pull up on the headphone pad to stretch it. The hole in the pad will now be large enough to allow you to pull the pad off the lip on the headphone cup. Remove any additional ripped pieces from the headphone cup, if needed.
Slide the top edge of the replacement cup over the top lip on the headphone cup.
Pull the bottom edge of the replacement cup over the lip on the opposite side of the cup.
Adjust the headphone cap so that the entire foam pad is held in place by the lip. The lip on the headphone cup should be completely hidden under the new headphone pad. The pad is now in place.
Repeat all of the steps to replace the other headphone pad.