I've always called it velcro,I found a simple, quick solution to attach the patch to the Belstaff jacket.
No sewing and no damage.
Hook-and-loop fastener is the solution.
I found the right size on Amazon. (AMAZON: hook-and-loop fastener)
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Greetings, wueste
To add a bit of <did you know?> to the forum:
"Swiss electrical engineer George de Mestral invented his first touch fastener when, in 1941, he went for a walk in the Alps, and wondered why burdock seeds clung to his woollen socks and coat, and also his dog Milka."