"Working Dog Do Not Pet" - Patch for Service Dog Vest or Harness DIMENSIONS: This Service Dog vest patch measures 4" wide by 2" high. APPLICATION: This vest patch is a Sew-On patch not a Velcro patch. Velcro patches tend to fit loosely and curl on the edges making for an unprofessional look . IDENTIFICATION: This embroidered Service Dog patch will minimize confrontations when out in public. HIGHLY VISIBLE: This Service Dog Patch is made with a heavy fabric making it extremely durable. The patch offer bold text that is clear to read. CLEAR MESSAGE: Vest patches are designed to inform the public that your dog is a service dog.