The Fox Main Stray Goggles let you pop out and change lenses depending on the type of trail you are tackling that day.Best-in-class viewport for unparalleled peripheral visionVariable Lens System (VLS) allows transfer of standard and injection molded lens3-layer face foam with fleece linerStrap mounted third tear-off postNon-slip silicone strapMicrofiber goggle bag includedLens TechnologyLexan lens offers UV ProtectionClear Lexan lens