Paint protection film is a transparent, robust and thin urethane film. It’s about 6 mils thick, or six-thousandths (0.006) of an inch. It was first invented by 3M for the US Army during the Vietnam War. 3M invented clear bra to protect helicopter rotor from high-velocity shrapnel and debris. The US Army needed a solution that not protected but that was very light-weight and 3M paint protection was the exact solution they need.
Nowadays, PPF main applications are in the automotive sector and they’ve evolved to cater to virtually all paint protection needs. In a nutshell, clear bras excel at one thing and that’s to protect your paint even against high impact damages such as rock chips, scratches, and scuffs.