Bicycle Dog Leash - Walk & Ride with Pet Dog Bicycle Leash Pet Laugh Hands Free Bike Bicycle Puppy Training Sports Lead Allows the biker to safely indicate a change of direction, since no hand is tied up holding the dog - like a third hand under the seat of the bike (right or left side) and installs in under 5 minutes with only 2 bolts and included hex wrench. No additional tools required Adjustable internal spring system for varying degrees of pullers. Greatly reduces shock from dogs that lunge or pull for a stable ride Design keeps dog from running in front of the bike and encourages them to stay a safe distance to right or left of the bike Your dog rides next to you so you can always monitor how they are doing and know when they need to stop and use the bathroom or when they are getting tired