These are military issued IR US flags worn for Friend or Foe identification. The flag is made of material that reflects when viewed under IR light.
Infrared Reflective Us Flag Ir Patches American United - Temu
American Made True Mil-Spec uniform patch Veteran Owned company
Forward Mini 2x1 Full Color Us Ir Infrared Flag Uniform Patch USA Military
American Flag Patch
Reflective - 3.5x2 inch, 1 layer Reflective film process that will not fail. Ultra High Quality (Sandstorm Technology) Made for Hot Environments
Reversed Full Color Reflective (Sandstorm Technology) US USA Flag Military Patch 3.5x2 Mil-Spec
Forward Texas Flag Patch IR Magic Black Two Tans Solas3™ Print 2nd Patch 3.5x2 With VELCRO® Brand Fastener
Infrared Forward & Reverse US Flag Patch, IR Military Green & Black
Infrared Reflective American Flag Patch Reverse
The Mil-spec Infrared Multicam (OCP) IR Flag Patch - American Made
IR AOR1 US Flag patch - forward facing. The patch is 3.5 x 2 / 9cm X 5cm and features a layer of laser cut AOR1 330D Cordura over a layer of 3M
Infrared NWU Type II / AOR1 IR US Flag Patch Forward
The Mil-spec Infrared Multicam (OCP) IR Flag Patch - American Made
FirstSpear IR Reflective U.S. Flag Patches (2x4) – Tactical Night Vision Company
US Flag IR Patch