Sennheiser HD25 headband is peeling and now theres green stuff inside. What is that thing growing exactly, and is it toxic? How do i clean and fix my headphones? : r/headphones
Amazon.com: SENNHEISER Momentum 2.0 Wireless with Active Noise Cancellation- Black
Geekria Comfort Micro Suede Replacement Ear Pads for Sennheiser HD700