200-PM-XL Size: Extra Large (15" x 5.5") Wearable harness which fits snuggly on the dog"s chest to prevent neck injury when the leash is pulled by force Features: -Made with durable and breathable fabric. -Dimensions:. -Extra-Small: 6" H x 3" W. -Small: 8" H x 3.5" W. -Medium: 11" H x 4.5" W. -Large: 13" H x 5" W. -Extra-Large: 15" H x 5.5" W.