Sennheiser Px 100 III Helmet Stereo Ultra Rare Control / Micro Foldable New | eBay
Sennheiser PX 100 (Black) Folding stereo headphones at Crutchfield
Amazon.com: Geekria Protein Leather Headband Pad Compatible with Sennheiser PX100, PX200, PX80 Headphone Replacement Headband/Headband Cushion/Replacement Pad Repair Parts (Black). : Electronics