This 22" Straight Clip-In Hair Extension Kit from hairdo Jessica Simpson and Ken Paves allows you to extend short or medium-length hair to gorgeous 22" length. If you already have long hair, add volume or length with this versatile clip-in extension. This HairDo Extension kit is made from 100% Kanekalon Vibralite modacrylic fiber, the finest quality synthetic fiber available. Affordable, lightweight and easy to attach, these virtually undetectable extensions can be put in and taken out in a matter of minutes. All HairDo Clip-in Extension Systems consist of one multi-level, contoured piece that creates an easy, fashionable style without the hassle of working with several individual wefts.