Suddenly the dog sees something and his instincts lead him to start running. This develops enormous powers, which can injure both dog and owner. That is why Curli has developed a rope leash that significantly reduces the jerk when a dog is being restrained. The core and sheath of the rope adapt to the tension placed on them. This is more convenient for everyone and ensures safe command transmission.70³/? inch lengthø 0.31 inch (size M) or ø 0.39 inch (size L).For dogs up to 55 lbs (size M) or 88 lbs (size L).Shock absorbing rope for stress-free communicationUltra soft Nylon rope for the very best grip, control and securityDog waste bag dispenserSafety ?Snap-In? Hook