Compatible with Koss UR-20 UR.20 UR20 Headphone & YDYBZB guarantee: 100% refund or reissue, if not fit Made of high quality Protein Leather and Memory Foam for Extra Comfort, Memory Foam to Enhance Noise Blocking LONGER USE & SUPERIOR COMFORT: Professional-grade protein leather is designed for long-term, crack-free durability. Ear comfort to the point of forgetting the headphones are even on! These pads are specifically designed for long-term comfort with your Headphones ENHANCED SOUND: The ear-conforming fit is due to a firmer memory foam cushioning which isolates sound perfectly from your environment while enhancing every beat that comes through your headphones Package included: 1 pair of Earpads (Headphone no included)