1/2-inch wide couplers are suitable for puppies and small dogs up to about 20-pounds. Features strong bar-tack stitching and welded O-ring. Walk two pets on one leash by clipping each end of the coupler to each dog"s regular (non-choker) collar. Then attach your leash to the O-ring and you"re all set. Available in a range of fashion-inspired patterns plus six solid colors, with matching collars, leashes and harnesses also available. All Lupine products are proudly built in Conway, New Hampshire and Guaranteed (Even if Chewed). Made from jacquard woven nylon, with the pattern woven into the webbing (never printed or sewn on.) Machine wash, warm water, mild soap (no bleach or bleach alternative). Air dry. Lupine products are not recommended for tie-out.