Simple yet one of the best ways to don your e-collar on your K9. Most e-collars have buckles that require you to control your K9 while trying to buckle the e-collar. Try doing that with an excited K9 or at night! Our K9 Bungee E-Collar allows the handler to slide the e-collar over the head of the K9 and using the cord lock, tighten the bungee cord for a nice snug fit. The Bungee E-Collar is available in two sizes. *Please note that the Bungee E-Collar does not come with the training device. You will need to install your training device on the K9 Bungee E-Collar. This kit comes complete with instructions for making the swap! IMPORTANT: To determine the needed size for your choker, measure your K9鈥檚 neck midway between the base of the ears and the shoulders This product has been tested and validated by local law enforcement K9 departments. Questions? Please give us a call 鈥