EzyDog Chest Plate Custom Fit Dog Harness ERGONOMIC EVA FOAM CHEST PLATE: Our ergonomic EVA foam chest plate construction molds to your dog's chest for a custom fit and unequaled comfort. Our unique design disperses the load vertically for a greater level of control over traditional harnesses. EASY ON AND OFF COMFORTABLE CROSS-FIT DESIGN: Award winning innovative, easy on and off, comfortable cross-fit design provides you with superior control and comfort for both you and your dog. And, we use our heavy-duty EzyDog Quick-Clip Buckles to provide you with fast and easy on and off for hassle-free fun. REFLECTIVE STITCHING THROUGHOUT: We've incorporated high-visibility reflective stitching throughout our award-winning design to increase nighttime visibility and safety for both you and your dog. RUGGED WELDED STAINLESS STEEL D-RING: Our rustproof stainless steel welded D-ring leash attachment gives you the ultimate in strength, durability, and security. SELECT THE BEST SIZE: Based on your dog's GIRTH measurement. If you are close to the end of a size, bump up to the next size:Girth (Inches): XS 12-19, SM 15-24, MD 18-29,LG 19-33, XL 22-38, XXL 30-53