Montana Original Tri-Angle Boar&rsquo;s Hair Car Wash Brush & Telescopic Handle Boars hair is naturally feathered at the ends but our bristles are flagged (split) one more time before being affixed to the heavy duty plastic handle. The tight bundles of hair ensure that the bristles remain sturdy as they gently whisk away dirt and grime from your vehicle. No nylon or polyester fibers are used in this brush  its 100% boars hair! Bristles extend from the sides, front, and bottom of the block, creating a huge surface area. This design allows you to tilt the brush to clean in tight places.