Design Lengths ExpressLocs Ponytail Clip-ins are a quick, easy way to add length and volume to your ponytail. The perfect accessory for beautiful, natural-looking hair in an instant! ExpressLocs Ponytail Clip-in Waves is a synthetic hair piece with a claw clip for a secure hold and comfort. ExpressLocs Ponytail Clip-ins add length and volume to plain or short ponytails with a quick, simple application. Constructed of 100% Kashmere Kanekalon fiber.