Size :7.62*5.08CM Backing: Hook Velcro Material: 100% High Embroidered This Quality Velcro Patch is Really Great for military Kit and Apparel and Jacket,Cap,Backpack,etc.Hook backing to secure onto loop patch on uniforms, helmets,outwear or fleece jacket sleeves, tactical vests,bags, backpacks, etc The origins of morale patches trace back to the fighter plane nose art of World War I. During the Vietnam War, units often created ironic, humorous morale patches.