This is an authentic Omega Speedmaster NATO ZSZ002084 watch strap, crafted from high-quality black polyamide. It is designed to fit Omega Speedmaster watches with 20mm or 19mm lugs and comes with the original Omega stainless steel buckle for a secure fit.
If you're unsure whether this strap will fit your watch, or if you have any other questions, feel free to email me at Sales@TheWatchLink.co.uk. I'm happy to help!