Things you will need:

• 2 metal spring links (Comes with the entire band.)
• wrapping material (I used paracord as the picture suggests)

I suggest you print this object with the highest settings as possible:

• infill: 90~100%
• print quality: 100%
• support material setting: as little as possible/ none at all. 
• printbed: not required but recommended if you don't have a heated bed with your 3d printer.

Story:

So my original Misfit Ray Band broke on me while I was hiking. The band material was not to par with outdoor activities. I later found out at every sports and electronics store didn't have any accessories for this particular item. So I did what every great tinkerer would do... I made my own :) .