The ESS (Interchangeable Component Eyeshield) system is a compact solution for those that need ballistic eye protection. The glasses offer an unrestricted field of view and the lenses can be swapped to meet the requirements of the environment.
The arms are totally adjustable meaning you can wear to a degree that suits, whilst the lenses are a doddle to change over.
Features: 
Comes with 3 lenses - smoke, clear and yellow
Offers UV protection
Ballistic proof
Adjustable arms
Can be fitted with headband 
Used condition, may come with minor scratches to lens