BIONONE explained it very well. I can't explain it better, as i have never tried a ziczac strap. Because i'm based in Europe i don't want the long waiting time and risk of paying customs delaying it further etc. So i normally choose either Jacobstraps (Spain), Camille Fournet (France) and Jean Rousseau (France). You can really tell why Breguet, Patek Phillippe, Jaeger-LeCoultre, MB & F and other high end brands use CF as their supplier of straps. The quality is unique. What you get is a strap that lifts the rep to a level its hard to question wether its a rep.
Just FYI: I’m based in Germany and ordered twice from ziczac already. Shipping took around 7 business days each time and the package had a sticker on it which said “duty free”.