This unit requires 4 bundles of hair with a 20-inch lace frontal. This unit is 26 inches long. That can be worn as a half updo, side part or middle part All hair is included unless if your choosing to build your own wig. lace frontal units requires you taking it to your stylist for customzation and installation so your finish proudut will look like the picture presetented with the unit, all units are handmade.