Our new red line dog harness is perfect for Firefighter Supporters and dog lovers. This harness is great for walking and training pets, designed to take the strain off of dogs' necks. Woven from high-strength nylon material, the dog harness is durable and lightweight, which allows you and your pet more comfort and freedom. Let your best friend show their support for the men, women, and dogs that walk the Thin Red Line! Available in sizes Small-XXXL One Thin Red Line Flag Patch Included Safety Lock to ensure no accidental escapes Premium Quality, Neoprene Lined for Comfort Highly Reflective for Safety Size Chest Girth Average Weight Small 21"-23" 15-25 lbs Medium 23"-28" 25-55 lbs Large 25"-31" 55-80 lbs X-Large 29"-35" 80-130 lbs 2X-Large 32"-39" 130 lbs and above 3X-Large 39" and above 140 lbs and above