First of all, the regular will only adequately fit a child, or a very small adult. Secondly, the quality of this vest is terrible. The materails used are by far the cheapest I have seen in a traffic vest in the numerous years I've been in security and law enforcement. Thirdly, the blue vests that were ordered came with black, non-reflective lettering which is indistinguishable from farther than 5' away with adequate lighting. By far the worst items I've ever ordered from Galls (I've been using them now for 8+ years now).