The Powerslide Finger Bell is an easy to use, comfortable finger bell for runners, solving the problem of how to courteously warn pedestrians on shared pathways. Features a one-size-fits-all, full wrap loop that is simple to adjust. Can be used for all types of activities such as running, bicycling, hiking, etc. Adjustable size, light-weight, bell adds safety to your run! Usable for bicycles, scooters, euc, runners etc. Metal bell with rubber ringer Ringer mounted on spring Be polite and courteous when passing pedestrians on trails and city sidewalks.