Sennheiser PX 100-II (Black) On-ear headphones at Crutchfield
misodiko 10PCS Replacement Ear Pads for Sennheiser PX100/ PX100-II/ Koss Porta Pro, Headphones Repair Parts Earpads Cushion Kit - AliExpress
Sennheiser PX100 Review | The Headphone List
Sennheiser PX 100 (Black) Folding stereo headphones at Crutchfield
Geekria Protein Leather Headband Pad Compatible with Sennheiser PX100, PX200, PX80 Headphone Replacement Headband/Headband Cushion/Replacement Pad Repair Parts (Black).