ESS Crossbow is unlike any other eye protection system you've experienced. The ESS Cross Bow Sunglasses system of eye shields and eye protection is built around the Tri-Tech Fit frame that achieves an amazing universal fit with maximized comfort and zero pressure points. Optimal stability is attained by balancing weight evenly throughout the eye shield frame. The ESS Safety Glasses feature groundbreaking ClearZone FlowCoat technology is engineered to eliminate fog inside and prevent scratches outside. The Ess Cross Bow Eye Shield system lets you switch lense tints effortlessly, with the innovative DedBolt Lens Lock that pivots up for easy release, then clamps down for rock solid retention under impact. It's from ESS, so of course the Crossbow Eyeshield system is compliant with U.S. Federal OSHA, ANSI Z87.1, CE EN 166 and U.S. MIL-PRF-31013. The ESS Crossbow Eye Shield is form, fit, and function, all perfected. Get your hands on a pair of ESS Crossbow Safety Glasses and see for yourself.