I got one of these, and now my shoulder doesn't feel like it's constantly on the verge of being ripped out of it's socket by my 70-pound black lab. The bungee material built into the nylon corded leash is GREAT for relieving stress. And my dog seems to like it better as well - our daily walks are a better experience on BOTH ENDS of the leash with the EzyDog.
The rubberized coating on the handle is tough, and it makes a great target for standing on when you need both hands free to pick up after, or move the garbage cans, etc. Do your arm & shoulder a favor, and get one of these.
They also make a harness that I've only seen in stores that works great to relieve stress from my dog's neck. No more wheezing, or choking for Buddy.