In college my sprint coach had this long heavy rubber cord/rope that would be tied to our waist. We’d run with this to increase resistance. Does anyone know what this is called or where to find one online?
I am not looking for a weight sled or bungie cords. This item was a long (at least 10 feet), heavy (50lb or more), and black..make of solid rubber. Diameter was about the size of a golf ball. Thanks for your help.
Salvador















