About this item COMPATIBILITY: Evolve 65(65UC/65MS), 20(20SE/20UC/20MS), 30(US/II), 40(UC/MS) Headsets. Please CHECK your Headphones' model before purchase. Do not fit Evolve2 65 (Gen 2.0) Headset. Flawless Installation: Besides the Replacement Earpads, a detailed user guide is also included, making the entire installation process easy and fast (usually 5 mins). Premium Material: Our earpads are made with high-density memory foam and softer protein leather, ensuring you excellent bass and superb comfort. Enhanced Sound: Your old ear pads may negatively impact the sound quality of the headset. Upgrade to our new earpads to make them look and sound brand new again. Size description: 5.71 x 3.82 x 0.59 inches.