The on-the-fly Acu-Dial system allows you to make adjustments for maximum comfort and stability with the In-Mold construction making it light without compromising durability. Acu-Dial The Acu Dial system combines single-handed adjustment with a full fit band that brings a quick, sure ponytail-compatible fit in their line of Universal Fit helmets. In-Mold Construction In-mold construction fuses a tough polycarbonate outer shell with the helmet’s impact absorbing foam liner. The fusion process allows Giro to sculpt better ventilation systems, so In-mold helmets can be lighter and cooler than traditional helmets….
