Enhanced for Use in the Peloton - Trenta offers maximum ventilation and aerodynamic performance, with the Trenta tipping the scales at just slightly heavier than its 3K Carbon big brother. While a small weight sacrifice is made, the drag-reduction offered by both Trenta designs is totally equal, ensuring you can cut through the wind with efficiency and speed, arriving at the finish feeling fresher than your rivals. Fast Shapes - The MET Trenta’s tube-shaped tail and internal channelling ensure it performs best when riding in a group, offering up to 7% reduction in drag vs a traditional road helmet. - MIPS Brain Protection System - MIPS is a brain protection system, engineered to add 10% extra safety to the standard construction of helmets in case of certain impacts. The MIPS Brain Protection System (BPS) is attached inside the helmet, between the comfort padding and the EPS.