Alpinestars bns pro neck bracealpinestars bns bionic neck supportpro neck braceuses an advanced glass fibre compound which is lightweight yet provides extremely strong performance in the event of a crash its designed to effectively divert impact forces away from the neck area teams up with any helmetthe bns pro also works along with your helmet to create a clean and solid surface to prevent any jarring or twisting of the head this design can help to reduce he risk of more serious fact