Some of my faves....

[kramer5150]

Zulu straps, Top to bottom:
Bertucci 3 ring
Maratac 5 ring (8 years old and going strong !!, was black at some point)
Generic 4 ring olive

 

[Laura Knotek]

Those look really nice.

Do they come in any other colors?

 

[kramer5150]

Yeah lots of different colors to chose from... Google image search NATO or ZULU watch strap. NATO straps have the smaller square shaped rings. Zulu (my preference) rings are bigger and rounded.