Yosoo Hands Free Dog Bicycle Bike Sport Exerciser Leash Lead Exerciser for Running Exercising Training Walking Jogging One touch lock and release Premium Bike Bicycle Attachment for Dogs with internal shock absorbing system for exceptional functionality and convenience during use Long elastic black cord (17.9 inch) with clip keeps your dog away from accidents Revolutionary design with premium stainless steel and carbon builds for utmost convenience and 100% efficiency during use. Can be used on all kinds of dogs; Including small dogs weighing up to 34 lbs, and Large breed dogs Easy to use and extremely convenient for your dog; Installs on any bike within minutes and guaranteed to keep your furry friend with you all through your bike ride