I bought this watch band because the stainless steel watch band on my old casio atomic watch which I use to replace the watch band on my new casio data watch did not exactly match the black data watch and was a bit smaller. This watch band fit the bill , black polyurethane and a good snap buckle. It fit my wrist but a bit stiff because I believe of the nature of the material. Next time I buy a watch band I will try the rubber material. This watch band works well except for it's stiffness. 4 Stars