This line is purpose made for Canicross. It is extremely light in weight but ultra durable. Ideal for handling dogs who know how to work in harness. 
Made out of 1 inch wide tubular webbing with built-in bungee.
It has a brass trigger hook at one end to connect to the dog harness with a small loop at the other for attaching to a Canicross or walking belt via carabiner or panic snap.

Short - 2m Fully Stretched
Long - 2.3m Fully Stretched