Lines are made out of wide tubular webbing, not just single fibres. This original construction provides better resistance to moisture and abrasion. Back and central lines are produced in black, and the side (tug) and neck lines in yellow. Back lines are 80 cm (30 inches) long, central lines 200 cm (80 inches) in length, side (tug) lines - 100 cm (40 inches) and neck lines - 30 cm (12 inches) in length respectively. They are easy to use for making additional sets to increase the number of dogs you are running.