Geekria Earpads for Sennheiser PX100, PX80, PC131, Koss SP PP Headphones Replacement Ear Pad / Ear Cushion / Ear Cups / Ear Cover / Earpads Repair Parts (Black) Compatible with Sennheiser PX100, PX80, PC131, Koss SP PP Headphone Protein Leather for Extra Comfort, Memory Foam to Enhance Noise Blocking Product Dimensions: 1.8 X 1.8 X 0.4 inches (5 X 5 X 1 cm) Package Contents: replacement earpad X 2, Geekria Warranty Geekria SureFit Guarantee: 100% Money Back if Not Fit