Vulture Premium Horween Derby Watch Strap

Maybe a hair under 22mm, but the leather is very supple if you're thinking of squeezing it into a 20mm watch. I actually bought the 22 by mistake, I thought my new watch had 22mm lugs but they are actually 20. I was able to fit the 22/20 in. It looks a little pinched but I think it will relax over time.

Beautiful strap. I just posted three pictures of the strap installed on my Apple Watch 5. It makes the watch look larger than it does with the Apple straps. I have a fairly large (8+ inch) wrist, and am wearing it on the first hole. If your wrist is any larger, it probably won't fit.