duell prime riding helmet black 55 57Excellent airflow design for improved comfort. Equipped with an insect screen made of lightweight but robust aluminium, it covers the air intake openings at the front of the helmet and provides additional protection during your rides. Interior: Indulge in supreme comfort with the microfibre lining taken from the tried and tested interior of the Mistrall 2 helmet. Carefully crafted to integrate seamlessly with the ventilation system, including a padded