Optimised for use in the peloton, the MET Trenta's tubular rear and internal ventilation ducts provide 7% less drag than a traditional design for best performance when riding in a group. The NACA vent and rear deflectors cleverly direct airflow inside the helmet, efficiently cooling your head without slowing you down. Especially as only 30% of the helmet rests on your head - temperature control at the highest level. Equipped with the Mips C2 safety system, the Trenta floats on the head and can thus effectively deflect damaging rotational forces away from the head in the event of a fall.