Your MH40 comes with ear pads that are magnetized for easy removal and replacement.
Simply pull from the outside ring of the ear pad to remove as indicated below.
Re-attach ear pads by aligning the three guide posts on the ear cup with the three guide holes on the inside of the ear pad. The magnets will assist in pulling the ear pads into place.
To clean your ear pads and headphones, simply use a soft, slightly damp cloth - never apply chemicals.
Do not soak, submerge or allow moisture to enter near the drivers or cable jacks.
Do not drop, sit on, or allow the headphones to be exposed to water, moisture, or temperature extremes.
When not in use, make sure to keep your headphones in the provided carrying case in order to protect them from dirt and other substances. To avoid damage, do not store other items in the canvas case along with your headphones