Top Notch Synthetic Hairpiece by Jon Renau really pumps up the volume! Worn on the crown, this topper integrates with your own hair to add body and give you total styling flexibility. Monofilament Double monofilament allows multi directional parting while providing the appearance of natural growth and superior comfort. This topper also has 1/8 of folded swiss lace for a natural appearance between your biological hair and your topper. Added Security This piece has 5 pressure sensitive clips along the edges to ensure a secure fit. The double monofilament is also coated with polyurethane for adding adhesive if needed. ComfortThe outer rim of the monofilament is covered with velvet for a smooth and comfortable transition.