Industrial Puppy Dog Harness Chest Strap Extender Harness - Service Dog Vest, Therapy Dog Vest, Emotional Support Dog Vest, and Others - Add up to 10" to Girth Strap **COMPATIBLE WITH INDUSTRIAL PUPPY HARNESSES SIZES MEDIUM, LARGE, XL, AND XXL ONLY** Feature heavy-duty plastic buckles and connectors to ensure a quick, secure connection Compatible with size Medium, Large, XL, and XXL Industrial Puppy Service Dog Harnesses only Will add up to 10 additional inches of strap length for a more comfortable fit Provides your service dog with additional comfort and prevents damage to fur, skin and provides freedom of movement