I can't overstate how much I do not recommend this leash. I thought it was great when I bought it at a dog show. The gimmick is that it is made of rubber, so when a dog who tends to pull, such as mine, yanks on it, the kinetic energy goes back into the leash, causing him to actually bounce back with the same force that he is pulling with.
I won't lie; it was hilarious seeing my dog bounce back when he tried to go after a squirrel. He had the most shocked look on his face. Also, the hand grip is very comfortable.
However, big however, when I was on vacation and a friend was walking the dog for me, the leash snapped in half on her and the dog got loose. Thinking it was a fluke, I sent the broken one back and got a free replacement. I had only had the new one about two weeks when he snapped that one in half as well. It upset me more because my dog was with me when I bought it and the salesperson assured me that they were perfect for dogs of his size. I paid almost $30 for this substandard product based on some salesman's hype. Be wary.