From durability part, it is resistant to abrasion, ensuring stability and durability in long time use Provides extra and comfort, reducing the feeling of pressure when wearing for long periods of time and enhancing the of using the headphones Lightweight reduces the overall weight of the headphones and improves wearing comfort Effectively protects the internal structure of the headsets from damage caused by collision or dropping Specifically for Major 3 and 4 models, they fit perfectly into the structure of the headphones to ensuring a seamlessly fit after installation