As you can see, our straps have measurements slightly different and can fit to vast majority of wrists, from a diameter of 14 cms to 20 cms about. If you have a smaller than 14cms or greater than 20 cms wrist, please send us an email with measures of your wrist and watch and we will make all we can to fit strap to your wrist.
Our straps are only ones to have the triple quick lock (see the light blue circle). This means to be able to release quickly not only the two parts of the watch but also the buckle, while the double white internal face, let you to use the strap aso in this opposite part.
You can see how to measure the width of your strap so to choose the right model.