Actually using NATO straps (Zulu even) may not be the best idea if you watch has the normal spring-bars. This is because the edge of the spring-bars can actually get caught by the edge of the NATO strap and work itself out of the hole. NATO straps were originally designed for watches with fixed bars or those watches with lug holes and the spring bars sits flush between the lugs. So be careful when you use NATO and ZULU straps on normal watches.