Dog Walkers (Martingale-style) - easy slip around the neck collar and leash that secures your dog without it tightening around your dog’s neck. - Great alternative to the Slip Lead. - Leash and collar in one for dog neck sizes neck 12-18". - Soft on the hands with its broken in feel easy to use and pliable enough to fit in your coat pocket. - Brass, satin nickel or black metallic hardware and oil tanned leather splices. - Vibrant colors with durable long-lasting multi-filament polypropylene rope. - Machine washable, air dry only. - Handmade in the USA and 100% satisfaction guarantee. Standard Dog Walker: (3/8″) fits dog neck sizes 12"-18" (for dogs under 50 pounds).