The Signet-Q motorcycle helmet takes the best from the RX-Q and some more and combines all of them right into a completely new collection for longer shaped oval heads The Arai Signet-Q incorporates an appreciably longer shell shape with five millimeters extra space front to back for increased comfort and ease, particularly the avoidance of ‘hot spots’. These days most of us have some sort of rider to pillion or rider to rider communication equipment in their motorcycle helmet. So despite the fact that shell shape is probably not the biggest need for all people, this extra room between mouth and motorcycle helmet may still be necessary. Arai also have crafted the view port 10 millimeters broader for increased peripheral vision by integrating their current SAI Shield design and style.  All very good.