Why Us? Perfect Fit! No matter the age, breed or weight of your pet, our dog collar is designed for everyone. Suitable for any stage of their lives: Pawtitas chain martingale dog collar for medium dog breeds is an outstanding choice for French, Bulldog, Beagle, Boston Terrier, Cocker Spaniel, the M martingale collar dog is a great choice collar for the medium dog SUITABLE FOR ANY STAGE OF THEIR LIVES: The large dog collar is an outstanding choice for L dog collar is an option for breeds like Pitbull Labrador Retriever Siberian Husky Golden Retriever a great choice collar for the large dog extra large dog or big dog This is the way our training collars is going to be with you through the entire stage of your pet's life. The sizes of our training collar range from medium collar to large and extra large no pull Collar. GREAT FOR TRAINING A martingale collar also tightens if the dog is pulling on a leash. You can give your dog slight corrections and it will respond much better than if it were wearing a regular collar. Our Highly reflective training collar is designed with traffic reflective properties to reflect ambient light in extreme low light conditions providing maximum visibility when need it the most. Fully Comfortable Pawtitas dog collar have an adjustable strap can customized fits for your dogs growth do not need to always change it.