Simple Installation     

The SPOILERCAPS wing has been designed to attach easily to most ball caps. 

NASCAR - INDY CAR - NHRA - FORMULA 1 - DRIFT - SCCA - OUTLAW

INSTALL ONE ON YOUR FAVORITE BALL CAP AND WEAR IT TO THE TRACK ON RACE DAY.

SPOILERCAPS ARE RE-MOVABLE AND RE-USABLE. REMOVE IT WHEN YOU GET HOME.

All that is required are 2 vent holes that are standard on the backs of most caps. 
Check the distance between the 2 vent holes.  It is best if the 2 vent holes are approximately 3 inches apart.  Since caps are flexible, this distance can vary from 2.5 inches to 3.5 inches.  

No tools are necessary, the wing snaps together through the vent holes for a lightweight and comfortable fit.  Installation is complete in just a few seconds.  Installation instructions are provided with all spoiler kits.