Ruffwear Knot-A-Long Leash - The Ruffwear Knot-a-Long™ is a rugged, climbing-inspired leash in a 30-inch (0.76 m) length. This short lead uses strong, supple kernmantle rope and a secure locking carabiner just like our longer Knot-a-Long. The short length is ideal for keeping dogs close. Carabiners not sold separately.