Dogline Medical Alert Removable Patches with VELCRO brand backing Removable/Interchangeable Velcro patches Features printed, reflective letters Unlike embroidery patches, they will not get caught on objects and thread will not come apart Patches come as a set of 2 Fits perfectly on our Anima Harness, Anima Utility Bags, Alpha Harness, and Maxie Mesh Vest XS patches measure 1" x 275", S/M patches measure 15" x 4", L/XL patches measure 2" x 6"