A few years ago, if you mentioned "custom patches" to most people in the UK, they'd picture embroidery — thread, twill, the classic stitched badge on a blazer or scout uniform. That's still a huge part of the industry, and rightly so. But there's another type of patch that's been steadily taking over tactical gear, workwear, and outdoor equipment, and a lot of people still don't know much about it:...