A helmet for a rider of an on-road or off-road vehicle protects the rider's head. The helmet also may include various features for enhancing the riding experience. For example, the helmet may include a face shield configured to be slidable and rotatable relative to a shell of the helmet. The helmet may also include a chin bar that is slidable and rotatable relative to the shell. Additionally, the helmet may include a peak that provides for toolless adjustment of position of the peak relative to the shell. An inner construction provides a multi-layer system in which at least one layer is an impact layer.