The included fit kit contains multiple sizes of ear sleeves, allowing you to find the perfect size for your ear and effectively reduce ambient noise by as much as 37dB so you can focus on your music. The detachable Kevlar-reinforced cable connects to the earpieces using gold-plated MMCX connectors to lock in place but also provide a 360° rotation. This rotation, along with the formable wire, allows you to direct the cable over and behind the ears to minimize snags and tangles. The other end of the cable has a 3.5mm mini plug, as well as 1/4" and airplane adapters for wide compatibility with consumer and professional audio devices, and in-flight entertainment systems. A detachable volume attenuator is included for lowering high-output sound sources. A compact and durable case is included for storage and transportation.