These sunglasses feature the extra protection of a wrap-around style with thinner temples for greater peripheral vision.Known for producing big surf and long sessions, Spartan Reef is one of the outer reefs of Kanaha located about one and a half miles north of Kahului Airport on the Central Maui Coastline. Maui Jim's Spartan Reef Polarized Sunglasses feature sleek wrap frames of lightweight yet tough nylon (Model 15215767 has a rubber frame) and SuperThin Glass lenses with outstanding optics and the best scratch and solvent resistance. Their PolarizedPlus2 lens technology goes beyond shielding your eyes from glare and harmful UV rays to reveal and enhance the colors that define wherever you live and play. Embedded nonslip rubber nose pads and temples help keep them on your face. Although, if you want to be extra sure they don't end up falling off at an inopportune moment (like when leaning over the gunnel to gaff that trophy muskie or leaning over the railing of the dock to observe the local seal gathering spot), a neoprene retainer or leash (sold separately) is inexpensive insurance.Lens TintHCL Bronze –this tint is versatile in changing conditions and provides excellent contrast. Great if you love a warm, subtle bronze tint. Best in full sunlight to overcast.SuperThin Glass LensesAbsolute crispest optics available20% thinner and lighter than standard glass lensesPolarizedPlus2 technology eliminates 99.9% of glareSuperior precision with absolute claritySharp contrast with great depth perceptionBi-Gradient mirror at the top and bottom of the lens squints for you so your eyes can relaxAnti-reflective surface blocks bounce-back glare from behind and eliminates eye fatigueEnhance natural light instead of dimming it for exceptional color and clarityBest scratch and solvent resistanceWaterproof and oleophobic to shed water and repel greaseBlock 100% of all harmful UV rays95% reduction in high-energy blue light (HEV)Enhance red, green and blue light wavesNylon FramesLightweight, yet tough nylon or rubber (Model 15215767 only)Modified rectangular styleGloss or matte finishFixed saddle-style bridgeEmbedded, nonslip rubber nose pads and