Petego Bicycle Spring Lead to let your dog safely run alongside you when you ride. Works very well. Our dog (45lbs) could not pull the bike over or effect the direction the bike was going in, even when he really wanted to go in another direction. Also he had some room to maneuver around rocks, brush etc if he had to. https://www.amazon.ca/Petego-Spring-Universal-Bicycle-Leash/dp/B00IUOUGKM