Cut the plastic along at the arrows to get rid of the piece lined with RED.
Then slip the knot into the middle of the band, where you see the crimped pattern changes a bit to accomidate the T-slots on the knot piece. Then hook the band onto your like a hook and edge to grab onto. You'll see.
Comment if you can't figure it out. I'll try to help ya! (It's so, so worth it)