- Plastic
 - Made in US
 - Flak Beta offers interchangeable design that offers benefits of a performane eyewear. This offers an innovated and a range of technology for an active person with a range of activities.
 - 64mm lenses
 - 8mm bridge
 - 131mm temples
 
The unit you receive may be marked :Sample" inside the arm. This marking is not noticeable while wearing the sunglasses.