OPTIC NERVE INTERCHANGEABLES The Interchangeable's include four high impact polycarbonate lenses: smoke/flash mirror for bright sun conditions 18% CE Cat 3, high definition copper/flash mirror for normal to variable light conditions 26% CE Cat 2, Amber for flat and low light conditions 65% CE Cat 1 and Clear lens for low light to night-time conditions 100% CE Cat 0. All four lens tints offer 100% UVA,B,C protection and are decentered for precision optical clarity. All frames are TR90 Grilamid nylon. All interchangeable styles come with a hard shell case, a micro fiber cleaning cloth and a No-Hassle Lifetime Warranty. * Halogyn has adjustable bridge rest, Tactilite Rubber Components & Active lens venting. * White Ranch, Stroke & Banshee - Rubber bridge rests, temple tips and vented lenses.