The Ingy bracelet is a bit special, and very cool to resize. If you look on the inside of the mid-links, there is a small button. What you need to do, is press that small button in with 1 toothpick, and then push the pin through with another one. THAT'S IT! It's sort of like a lock for the links. Each mid-link locks in 2 pins.
Enjoy the watch and wear it in good health... it looks great!