MTI Underdog Canine Life Split Foam Body with Mesh Top Neck and Chest Strap 2 x Grab Handles Reflective Trim Cordura Fabric <span class="a-text-bold"><u>X-SMALL - 2-12 lbs</u>.</span> - Chihuahua, Papillon, Toy Poodle, Havanese, Brussels Griffon <span class="a-text-bold"><u>SMALL - 12-24 lbs.</u></span> - Miniature Poodle, Lhasa Apso, Pug, Many of the Terriers <span class="a-text-bold"><u>MEDIUM - 24-60 lbs.</u></span> - Cocker Spaniel, Corgi, Border Collie, Australian Cattle Dog, Dalmatian <span class="a-text-bold"><u>LARGE - 60-90 lbs.</u></span> - Pointer, Weimaraner, Pitbull, Collie, Greyhound, Boxer, Doberman, Irish Setter <span class="a-text-bold"><u>X-LARGE - 90-120 lbs.</u></span> - Rottweiler, Bloodhound, Bernese Mountain Dog, Bullmastiff, Great Pyrenees