uxcell Cyclists Runner Detachable Straps 16 LED Light Up Reflective Stripes Safety Vest This is particularly useful for long distance runners. They can slip on this lightweight vest and be seen from a distance. Workers and policemen and anyone who has to demarcate a zone of safety for himself and his colleagues after dark. Detachable straps make the vest adjustable for a comfortable fit for most sizes. Please check your measurements to make sure the item fits before ordering.