The change from on-leash to off-leash can be stressful for most dog owners. A long line is a great way to make that transition. Give your dog more freedom, but still keep them attached to you! This is a great tool for teaching off-leash reliability and recall. All long lines are 1/4″ thick and made in the style of the Dynamic Duo, meaning there is a clip and a floating ring so that it can be used in either the clip or slip function.