Worn once before I got one with a built in Mic system- nothing wrong. Sz S/M It offers safety for all, at the highest levels – the shell made of high-resistance thermoplastic material, the multi-density EPS and the details such as the collarbone-protection profile and the protective visor allow K3 to obtain the strict ECE22.06 homologation. Due to the AGV Extreme Safety construction protocol, K3 meets the requirements of the most recent international standards and then some. Its strength lies in its versatility. K3 is designed to put in its best performance in all situations. The built-in sun visor, which can be operated conveniently with gloves on, assists when it’s too bright, and doesn’t block the front ventilation when it’s in the rest position. The Pinlock Max Vision antifog system guarantees maximum visibility even on the wettest and coldest days,.