Abstract: A helmet comprises a protective shell shaped to protect a head of a user. The protective shell has an exterior surface, an interior surface, and at least on one opening extending from the exterior surface to the interior surface. At least one detachable cap is sized and shaped to fit the at least one opening.
Abstract: A helmet comprises a protective shell shaped to protect a head of a user. The protective shell has an exterior surface, an interior surface, and at least on one opening extending from the exterior surface to the interior surface. At least one detachable cap is sized and shaped to fit the at least one opening.