Picture of actual item's
Approximate size 85mm x 65mm for the screaming eagles crest, 65mm x 45mm for Sergeants chevrons
Simply iron-on or sew-on to any piece of clothing, bag, or whatever fabric you want.
If you are ironing onto a type of fabric that shouldn't usually be ironed, put a piece of cloth (cotton for example) over the patch and the other material before you iron.
The back of the patch has a special adhesive, that once ironed on, the heat will permanently affix it to the item.