COMPATIBLE: These Jarmor ear pads sweater covers are compatible with Beats Studio 3 / 2 Wireless / Wired Bose QuietComfort 15 QuietComfort 25 QuietComfort 35 and the other ATH AKG SONY Sennheiser headsets with 3 - 4 inches ear cushions. (Note: Do not compatible with Beats Solo and other headphones with 1.57-2.91 inch ear pads.) EASY INSTALLATION: No tools needed, easy to install and use. PROTECTION: Protect your headphone ear pads from scratch, dirt and sweat, greatly improved the earpads durability. HIGH QUALITY MATERIAL: Made of durable stretchable knit fabric, the ear pads protectors have comfortable touch. And they can be hand washed. Each earpad is thoroughly inspected for defects. If you encounter any installation issues, please contact us as soon as possible.