With the MIPS-C2 system for brain protection, the Trenta can slide relative to the head during a fall to redirect harmful rotational forces. Designed for use in the peloton, the rear design of the MET Trenta and its internal channels allow for optimal performance in a group, providing up to 7% less air resistance than a conventional bike helmet. The NACA front ventilation and the rear air deflectors work together to direct airflow within the helmet without slowing you down. 30% of the helmet is in contact with the head, which reduces temperature rise.