XL DOG HARNESS: Ideal for extra large dogs such as Great Dane, Saint Bernard, Mastiff, Irish Wolfhound, and similar breeds. Before purchasing, please carefully measure your dog's chest girth to ensure the perfect fit. BUILT TO KEEP YOUR DOG SAFE - Made from heavy duty Oxford and Military Grade Nylon materials, the harness features reflective strips, a Gel handle for Extra large dogs no pull has a pulling strength of up to 750 LBS! Enjoy the Front & Back leash attachments and soft padding to protect your dog's trachea. 360° REFLECTIVE TRIM: Be seen at day and night thanks to the new trim designed to be more reflective than other harnesses on the market with extreme visibility to ensure your dog is easily seen in low-light conditions, enhancing safety during nighttime walks. MAKE EVERY WALK FUN – By purchasing our lightweight & breathable no pull harness for Extra Large dogs, your furry friend will move freely without rubbing or discomfort while looking great in the process. The front d-ring helps to promote no pull training and stop pulling, while not causing pain or choking. Simply attach the leash to the front clip HOW TO CHOOSE THE BEST SIZE - Longer straps with extra adjustment and reinforced safety clips helps you find the perfect fit. Please refer to the sizing chart in the main image. Our Large dog harness for large size dogs has chest measurements 40 - 45 inches & Neck 21 - 34.