The REFLECT360 Running X-vest is unisex and adjustable to fit all sizes. Designed in line with our best-selling Proviz High Visibility Vest, the REFLECT360 running vest utilises 100% reflective material to help you stand out when out for your run. The REFLECT360 vest is an extremely lightweight item to accompany you out on the roads during hours of poor light or darkness as the lightweight reflective material reflects light and therefore you are more easily identified on the road. About the fabric: The fabric used for the REFLECT360 range is highly technical. During daylight it is a modest grey colour. At night, when the fabric picks up an external light source, eg vehicle headlights, it gives ?astonishing reflectivity' (quote: Cycling Active Magazine) as it utilises millions of reflective beads that catch the light and reflect it back to the light source helping you be seen further in advance of travelling vehicles.