Every Bern helmet starts with the shell. Long before materials are finalized or features are added, we obsess over shape, profile, and line work, because how a helmet fits, feels, and moves through space begins there. Vent placement is tuned through repeated prototyping to balance airflow, strength, and weight, not guessed or copied. Foam densities, shell materials, and structural transitions are engineered as a single system, each choice influencing the next. Nothing is accidental. From the first sketch to the final mold, the shell and foam reflects meticulous design work focused on low profile comfort, clean aesthetics, and protection that performs without excess.