This watch strap does not include the tools required to change it's length (it's size) nor the written instructions that would make you realize you are missing the necessary tools, or how one might go about doing this with or without the required tools. You get the band ONLY. You also need the tool, which has 4 components. It is possible, though very difficult, to change the size (by removing links) without the tool, but without the instructions you'd never know this. I only know this because I have a similar band that DID come with the tool, so I know how to remove the links %26 the tool I already have allows me to do so. Briefly: each link has a pin. The side of the pin that has the smaller diameter, the one without the visual slot, needs to be pushed out with a very thin punch. That same pin is inserted in the reverse direction. There is an arrow on the links denoting the REMOVAL direction. I have many punches, and I don't have any (other than the one I had that came with a different band) this small, nor would I know where to get one. Without these tools, likely you would need a watch professional to do this work for you.