An small material oval, interlocked with a strong, flint weave; Often used to cover the worn, elbow area of a shirt/jacket.
One can create fire by rubbing two or more survival patches together, causing friction.
Dean - "It's so damn cold out here, I wish we had some source of warmth."
Isaac - "Hey, grab that shredded weed. I can use my survival patch to make a small fire."
Greg - "This small fabric oval. What does it mean?"
Tom - "It doesn't mean anything sir... It's a survival patch.