Feature: 1. The updated accessory connects to a full range of FAST helmets, MICH helmets, and Peltor Comtac walkie-talkie headsets. 2. Tested compatibility shows Comtac I and Comtac II headsets can be attached to various FAST helmets using the hook system. 3. After installation, the ear muffs from the headset detach from the original headband and securely attach to the buckle, which fits into grooves on both sides of the helmet. Once mounted, the ear muffs allow for free rotation with the Comtac headset. Usage: 1. Remove the ear cups from the side brackets. 2. Retrieve the headphone wire from the protective case (the hoop must be broken). 3. Attach the ear muffs to the product's hooks (align properly and secure on left and right sides). 4. Mount the assembly onto the helmet. 5. Wrap the headphone cable around the top of the helmet and secure it with tape. Includes: 1 pair x headphone holder