Y.S. Park 452 Straightening BrushFeatures include: Air holes Lightweight Pure boar bristles Wooden handle YS Park "Air Hole" System is a system of small holes made along the center shaft (at the root of the bristles), allowing heated air to circulate through the entire brush, all the way to the bristle roots. This eliminates the build up of hair damaging heat pockets, and it reduces the time (and energy) spent on blow drying. 228 Air Holes 12 rows Size: 56x220 mm Weight: 52 g