Description A lightweight, high visibility vest, made from breathable mesh fabric for increased safety when on the roads at night. Available in grey/yellow or pink/grey. When to use it To improve visibility to other road/path users when running, walking or cycling. Sizing Small/ Medium (up to 40" chest) Large/X-Large (40"+ chest) How it Works Nathan reflective products feature visibilty at a minimum of 1, 200 feet because that is the distance a driver at 60mph needs to detect, react & manoeuvre. In comparison, light coloured clothing is visible at a mere 300 feet, drastically cutting the time available to avoid an accident. The reflective series is designed with the need of the athlete in mind, making sure that performance is not sacrificed. Great for running, walking or cycling, the Nathan Twilight Vest is made with a lightweight, breathable mesh. ID card included.