THE NEXT GENERATION OF SHOCK ABSORBING LEADS This is a highly sprung bungee lead that absorbs any sudden shocks naturally made by your dog. Includes two Carabiner leads, tested with high intensity pulling power, making this double ended connecting lead very strong. SUPER SOFT & PAIN FREE Durable, yet soft. Absorbs tension between you and your dog, helps to reduce the strain and shock to your pet, offers more freedom and takes the pain out of his / her neck and back. SMALL TO LARGE BREEDS AND DOUBLE ENDED Built-in high elasticity latex, good in extension and shrinkage, less tendency of material deformities. The outside is covered by nylon material, sturdy enough to prevent biting.