21mm sailcloth strap with deployment clasp/ quick release - never worn (tried it on the watch only). Asking $40 shipped . Really good quality for the money; I purchased this for a planet ocean but broke down and got the OEM omega strap while I waited for this to arrive from Finland. Will throw in the 20mm nato (blue/grey) with purchase - nice quality / same company. https://finwatchstraps.com/collections/omega/products/copy-of-sailcloth-quick-release-watch-strap-for-omega-watches-with-omega-style-clasp-watch-lugs-22x20-mm-21x20-mm-20x18-mm-19x18-mm-1