http://www.cactuscanyon.com/bungee-dog-leash.htm Bungee pet dog training chains are the best quality canine leashes offered anywhere. They can be found in 3 and 6 foot sizes for all sizes of pet dogs. These Ben-gee dog chains use bungee cord to assist quickly train canines without strain or stress on the canine or proprietor. Bungee dog training leashes have designs available for canines as much as 25 pounds, 45 pounds, 65 extra pounds and also over 65 extra pounds. The training chain makes it very easy to train a pet to walk on a leash.