Marathon is proud of their bracelets and straps. Also, this a reissue of the original SAR from about 25 years ago (the SAR predated the GSAR).
Long Island Watch has their own bracelet for the GSAR for $129:
https://longislandwatch.com/islander-20mm-brushed-h-link-bracelet-for-marathon-41mm-gsar-or-tsar-watches-brac-90/
Long Island Watch has their own bracelet for the GSAR for $129:
https://longislandwatch.com/islander-20mm-brushed-h-link-bracelet-for-marathon-41mm-gsar-or-tsar-watches-brac-90/