Sunglass Model ID Help
Screaming Demon
Let's start with the Screaming Demon since it's easiest to tell apart from the others.
Screaming Demon does not have a metal face or temples, and is instead made completely from a durable Grilamid Nylon, which has a very similar look and feel to plastic. It is very lightweight and has hinges that feel like they "snap" open into place.
Speed Demon and Shifter
Speed Demon and Shifter are identical in appearance with the exception of the color of the temples.
The Shifter, shown below on the left, comes only in a unique color combination of a black face with aluminum colored temples.
Speed Demon comes in a variety of colors and finishes, and is most often confused with the Pioneer. The key difference is the frame height. Speed Demon has a taller frame than Pioneer. If you follow the bottom contour of the Speed Demon frame from the center to the outside, the frame has a "step" up near the outside of the lens before the frame meets the temple to account for the taller frame. The Pioneer does not have this, and transitions smoothly without this "step".
All Lenses and accessories compatible with Speed Demon are also fully compatible with Shifter.
Pioneer
If its metal, its not a Screaming Demon. Its not a Shifter because of the color. The most common confusion here is between Pioneer and Speed Demon.
The key difference is the frame height. Speed Demon has a taller frame than Pioneer. If you follow the bottom contour of the Speed Demon frame from the center to the outside, the frame has a "step" up near the outside of the lens before the frame meets the temple to account for the taller frame. The Pioneer does not have this, and transitions smoothly without this "step".