The Scott Pets adjustable harness is great for any size dog. The harness comes in four sizes， XSMALL， SMALL， MEDIUM， & LARGE.

For sizing see below:

• XSMALL - Adjustable harness 3/8" wide nylon; 8 1/2" to 14" for extra small dog breeds
• SMALL - Adjustable harness 5/8" wide nylon; 12" to 20" for small dog breeds
• MEDIUM - Adjustable harness 3/4" wide nylon; 18" to 30" for medium dog breeds
• LARGE - Adjustable harness 1" wide nylon; 22" to 38" for large dog breeds