Doggie Stylz Set of 2 Reflective PTSD Reflective Removable Patches for Service dog harnesses & vests. Set of 2 PTSD Reflective Removable Patches. Makes It Easy to Change For Vests With Loop Material, These Patches Have Hook Material On The Back Reflective Material Helps Keep You And Your Dog Safe at Night Unlike Embroidered Patches There are no Threads to Snag and Break Reflective Printed Lettering is Easy To Clean