ESS is Oakley's Ballistic Eye Pro line.
Proudly made at the Oakley, ISO 9001:2008 certified U.S. factory, these battle proven lenses can not be beat. Not only do you get ballistic protection, but you get the same UV protection you expect from Oakley sunglasses.
The official eye pro of the USMC and supplier to all US military, they are trusted by Spec Operators in over 100 nations. If that is not a quality testament, they are also backed by a 5 year warranty. For the most function we prefer the CDI model with its selection of 7 inter-changeable lenses. No need to carry 2 pair of eye pro for day and night, no need to swap your sunglasses, plus there are lens options for rain and fog.
The resilient, battle-hardened CDI sunglass has a long track record of saving eyes and lives in hostile situations. Following a series of comprehensive overhauls, the redesigned CDI has never been better.
The ESS CDI's U.S. MIL SPEC* high-impact lenses can be easily exchanged for quick adaptation to your environment. Its high-speed low-drag frame and shatter-resistant lenses make the CDI comfortable and cool enough for downtime yet functional and rugged enough for the battlefield. Medium fit.
The CDI's Lateral Exchange System makes interchanging any of the seven available lens colors quick and easy: