Looks similar to the double yarn perlon from Watch Obsession: https://www.watchobsession.co.uk/products/perlon-double-yarn-braided-one-piece-watch-strap-buckle-in-black?variant=39334009962567
that will do the job, will wait until they have the 20mm grey in stock i want.
@Mr_Smyth started
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Looks similar to the double yarn perlon from Watch Obsession: https://www.watchobsession.co.uk/products/perlon-double-yarn-braided-one-piece-watch-strap-buckle-in-black?variant=39334009962567