Doubled-faced ribbon is critical for making this bow because it looks the same on the front and back. You'll be folding the ribbon back and forth, exposing both sides.
Tip: Ribbon will sometimes fray on the cut edge. To prevent this, apply a small amount of clear nail polish or liquid seam sealant (such as Fray-Check by Dritz). Be sure to dry the ribbon thoroughly before adding it to the wrapped gift or it might stick to the paper.