Just any harness is not nearly good enough for your sweet dog. This three way adjustable ribbon harness is made from high-tensile strength nylon webbing with polyester/nylon ribbons that are stain and fray resistant. Extra strength cast brass hardware and a Coast Guard approved plastic buckle ensure your excited pup can't break away. Your best friend will stay comfortable on those long hikes in this stylish harness. XS - 5/8 wide, fits approximately 11 - 14 girth SM - 5/8 wide, fits approximately 14 - 18 girth MD - 5/8 wide, fits approximately 18 - 23 girth LG - 1 wide, fits approximately 23 - 28 girth