Flyff armor implementation

I recently decided to try to make a custom cs fashion set from scratch. I thought that since the suit part of the Fashion bends ingame and follows the animation of the character that it would need bones in it, but no cs fashion in the game is rigged. So i was wondering, how cs fashion is linked to the animations of the character model without having bones? The character model has a lot of bones in it that make it seem like the armor, cs, and even the cape use the bones in the character model as their own somehow. If anyone could help explain how i could possibly explain how this works i really want to make a full custom cs set.

Thanks

It's linked using vert colors or whatever they're called.

: Screenshot by Lightshot

hmm? so how do you assign specific vert colors or whatever to vertexes in blender or 3ds max