Yisibo 2 Pieces Tactical SERVICE DOG Patch Tactical Nylon Medical First Aid Red Cross Morale Patches Badges (Rectangle, SERVICE DOG-Black) Superb embroidery thread SERVICE DOG patches,suit for different occasion. Sturdy Hook fasteners - on the back of the item there is hook fasteners,easy for change. SERVICE DOG Patch size 4 x 2 inch. SERVICE DOG print in bold letters on a background for easy identification and added safety. Interchangeable/removable - this tactical patches can be used for multiple dogs or a dog with multiple roles.Perfect fit many of the tactical dog harness or vest.