Snowboard and ski helmets are usually made from industry standard EPS foam, but each manufacturer can use their own specific designed construction. Below you will find some of the main constructions methods used for helmets today. Remember most helmets are designed for handling a single large impact and should be replaced after you have had an accident.
This construction makes use of a thin, hard plastic outer shell that is attached to an EPS foam liner to absorb the shock. This design allows for less rebound during the impact because it will simply collapse under hard impact. Helmets with an in-mold construction are also lightweight.
Hard Shell ABS
This construction uses a thick, tough ABS plastic shell that is pre-formed and glued onto a hard foam interior and liners. Helmets with a hard shell ABS construction offer good all-around protection while still being budget-friendly. These are good helmets for beginners.
This construction features a 2 foam density, with a comfortable softer foam against your head transitioning to a harder foam towards to outer shell for protection against hard impacts. These helmets are mostly designed for multiple, less intense impacts but there are some exceptions where soft shell helmets are certified to also handle a single large impact.
Photo Courtesy: Pro-Tec