Grade-A Microlink Hair can also be used for traditional weaves and bond-ins. For Microlinks: One bundle is recommended for medium-density hair; two bundles are recommended for thick hair. If you're unsure about your hair type, please consult with your stylist for guidance. For Traditional Weaves and Bond-Ins: Typically, two bundles are used for a natural look; three bundles are recommended for a fuller look. Note: The longer the bundle length (in inches), the shorter the weft. For example, a 24" bundle will have a shorter weft than a 16" bundle. If you're purchasing hair longer than 20 inches, we recommend buying three or more bundles to achieve full volume.