The Lock-n-Lead™ is a 4.5ft lead connected to a 1.5ft traffic lead. It has a handle/traffic lead at the end of the lead (closer to the dog) for pulling your dog in close, with the addition of adjustability options. When *locked* together, the panic snap on the end of the main 4.5ft lead keeps it securely attached to the 1.5ft traffic lead and acts as a normal 6ft lead. You can use both pieces together or separate them. The D-ring near the end of the main lead allows you to secure it around your shoulder while using the traffic lead alone or for use as a hands-free lead.