The Dog Helios Tripod Superior Comfort Performance Harness and Leash combination features a unique design meant to place a more controlled and evently distributed degree of pressure on the dogs chest and belly area. In addition this design provides a more free-range of motion. Features Dual-Reinforced and Reflective Stitching and Embroidery and is inner linned with Soft Neoprene which gently hugs the body. Incorporated or stitched into this design is the above-top grab and rescue handle. Available in Multiple Sizes and Colors. Size Specifications in Inches: LEASH: 48 Inches: SMALL: Neck Circumference: 7.87 - 11.81" Weight: Up to 7.7 Lbs MEDIUM: Neck Circumference: 9.84 - 14.57" Weight: Up to 17.68 Lbs LARGE: Neck Circumference: 13.65 - 19.88" Weight: Up to 32 Lbs