Running with your dog is the greatest thing. Not only does he or she get exercise, but I do believe its the perfect way to spend time and bond with your pet. If you're like me, your pets are like your children. Bosco goes everywhere with me now. Today I ran him for a full mile for the first time and it was great, especially with the cardio canine belt, it was easy and fun. We have registered to run in the dog day run which will be held here in Florida in march. So I strongly suggest that you try this prodcut or buy it for someone you know who loves to run with their pet. Its better to run with 6 legs then it is with 2. :) Happy running and keep those tails wagging.