I have purchased several straps from Amazon made by a company named ArtStyle. They seems well-made and I like them, but they are a tad heavy. From what I have learned they aren't a true NATO strap because although they have a doubled band, they have the rounded and heavier hardware that is usually associated with a single band Zulu. They are also thicker than the other NATO straps I have.
I recently bought a Luminox STC with a carbon fiber case, so replacing the stock rubber straps with one of the ArtStyle straps adds more weight than I wanted for a light weight watch. I wanted to trim off the extra band and two extra rings, but I wanted to make sure it didn't weaken the stitches or leave a point where it could fray. This is probably not news to anyone who works with nylon, but a hot knife is your friend when cutting webbing. I heated up my least favorite kitchen knife and melted right through the strap----like a hot knife through butter!