Dark colored cars that need all they can get on protection especially during extreme months.

Cars you plan on keeping for a long period time (lifetime warranty).

Lighter darknesses needs and achieving more protection as compared to others.

Newer cars where radio, satellite GPS, and cell phone reception might be an issue with some metalized films.
 

It's used on newer cars with lots of electronics. It won't interfere with any electronics while giving the performance similar to metalized films used on older car scenarios. It gives a medium darkness appearance. If used on all windows, cars have that nice smooth classy medium tinted O.E.M. look.

We also use this film to match front doors on S.U.V.s and trucks that have factory privacy glass on everything but the front doors. Matches well to the factory's privacy glass and the color is what has to be used for things to look correct on those applications.

35% is also the most popular darkness used to add to existing factory tint in trucks and S.U.V.s that needs darkening. This darkness added to the factory's is usually just right for those scenarios and most are very happy with. Night vision is still acceptable in doing this on these types of vehicles. It will be about the equivalent of our 5% installed on clear glass. Anything darker will KILL your night vision and will be uncomfortable to drive with if you need to see out specific windows...

This film darkness appears dark and is what we use mostly when people request to use darker film on windows allowed by law (usually juuust right when going darker where allowed to by law). Usually used on large, long sloping rear windshields and on unrestricted windows on trucks and S.U.V.s.

This film is not recommended to add to existing factory tint in trucks and S.U.V.s . Night vision will be terrible for most needs unless you don't need to be able to see out at night on the windows you put it on such as sunroofs or the back half of work cargo vans. It will be darker than the 5% described below.
 

This film darkness appears dark and is what we use mostly when people request to use darkest film made on windows allowed by law (darkest available when going darker where allowed to by law). Usually used on unrestricted CLEAR GLASS windows on trucks and S.U.V.s.

Note: This film is not for everyone. It may restrict visibility in limited lighting scenarios especially on long sloping rear windshields. It's more of a special application film type.

This film is not recommended at all to add to existing factory tint in trucks and S.U.V.s . Night vision will be non existent for most needs unless you don't need to be able to see out at night on the windows you put it on such as sunroofs or the back half of work cargo vans. With this combination it's kind of like we'd have to say "dude, why don't you just spray paint it"...