This dog training rope is provided with the lightweight materials and the high quality rotating hooks to reduce the burden on pets and owners and extend the service lift of the belt.it is designed for training,tie out,play,safety,camping,teaching,swimming and hiking.You will like it. RECOMMENDED USE: 10 ft and15 ft long dog leash:Great for exploratory walking,potty with shorter range. 20 ft long dog leash:Close ball play,using the potty with freedom. 30ft long dog leash:Recall traning,freedom to romp.