Moved By Bikes Dog RunnersThe MBB Dog Runner gives you a safer way to ride your bike with your favorite pup. The Runner features a sturdy seat post mounted bar that extends out from the bike and provides a leash directly above your dog's collar or harness. This controls your dog's movement while they run alongside your bike. The leash is spring loaded, and adjustable in both length and firmness to match puppies of all sizes and temperaments. The combination of a solid