The Porcupine rounder features a unique combination of boar and nylon bristles. The white nylon bristles are extended for deep penetrability into any hair texture. They are especially useful for penetrating damp hair. The black boar bristles can then hold the hair for super styling results, as well as assist in the distribution of natural oils.The G-9 has a 1-3/4" diameter size rounder, reinforced boar with nylon porcupine, spiral row bristle for short to mid-length hair. Pin tail handle for sectioning.