23" Wavy Hair Extension by Hairdo is a one piece heat friendly synthetic hair extension that let's you add instant length and texture to your own in minutes. This clip in hair extension is the easiest way to transform your look from short to long locks effortlessly. Measuring 23" long, this multi-level contoured extension system creates an easy and fashionable new style. Affordable, lightweight and easy to attach, perfect for all hair types and is virtually undetectable!