4 1/2" 25th Infantry - Jungle Expert - U. S. Army Jungle Operations Training Center (JOTC) Embroidered Patch with Merrowed Edge and Wax Backing - Oahu, Hawaii - Tropic Lightning Original Artwork by Bayonet Design (Owner is 11B and 12B Veteran of the US Army) Wax Backing (Iron On) Merrowed Edged Commemorative Patch Size is 4 1/2" round Diameter Features a merrowed edge which gives an efficient and uniform stitch Great patch for your motorcycle jacket or a shadow box display