Specification： Applicable to COMTA series headphones. Material: Velcro fabric+alloy Headband protector cover size: 1.9in*8.6in Headband maximum expansion size: about 6.6in Product weight: 0.15kg Package List: 1 * Headband 1 * Headband protector cover 1 * User guide This product contains an alloy headband and a Velcro protector for the headband. Velcro protector is easy and quick to install, as long as the two sides of the protector fit together, you can wrap the headband. The headband protector is very lightweight, easy to remove and install and clean. One side is a thin fluey fabric, the other side is a harder Velcro fabric. The helmet version of the headset can be easily converted to a headset version. The headband is made of a thin and light alloy sheet that can fit a wide range of head circumference sizes. It can be extended up to about 6.8in. There are two colors to choose from: black and tan. Match your helmet and headset to choose your favorite color.