About this item COMPATIBLE: These ear pad sweater covers are compatible with various headsets with 3 - 4 inches ear cushions. (Note: Not compatible with headphones that have 1.57-2.91 inch ear pads.) EASY INSTALLATION: No tools needed, easy to install and use. PROTECTION: Protect your headphone ear pads from scratches, dirt, and sweat, greatly improving earpads durability. HIGH QUALITY MATERIAL: Made of durable stretchable knit fabric, the ear pad protectors have a comfortable touch. They can also be hand washed. Product dimensions: 4 x 4 x 0.1 inches.