When you try on the ESS Crossbow, you'll discover it's unlike any other ballistic eyeshield. Experience the Tri-Tech Fit frame that achieves an amazing universal fit with max comfort and zero pressure points. Then notice the lenses. They won't fog. That's thanks to groundbreaking ClearZone FlowCoat technology, engineered to eliminate fog inside and prevent scratches outside. As you stare down your objective through distortion-free ESSOPTICS, you'll see just how optically precise vision can be. When you're ready to switch tints, the innovative DedBolt Lens Lock pivots up for easy release, then clamps down for rock solid retention under impact. It's from ESS, so of course the Crossbow is compliant with U.S. Federal OSHA, ANSI Z87.1+, CE EN 166 and U.S. MIL-PRF-31013. Form, Fit, Function...Perfected. Get your hands on a Crossbow and see for yourself. The Crossbow features interchangeable 2.4mm polycarbonate high-impact-lenses that provide 100% UVA/UVB protection. The Crossbow 3LS kit includes One Crossbow frame, with three interchangeable lenses: Clear, Smoke Grey and Hi-Def Yellow. It also includes the hard storage case, micro fiber pouch, snap-on elastic retention strap, the ESS sticker and instruction booklet.