ESS Crossbow 2X Sunglasses 740-0386 work as a exceptional ballistic eyeshield combining technology and premium optics. Eye Safety Systems Crossbow 2X come with two pairs: one Crossbow Sunglasses pair with clear lenses, and one Crossbow Sunglasses pair with smoke grey lenses. These ballistic sunglasses feature patented Tri-Tech Fit technology which provide a zero pressure point universal fit. The lenses are fog proof and scratch resistant due to ClearZone FlowCoat lens coating technology by Eye Safety Systems.