From where we sit, the unobstructed view you'll have with these sunglasses only begs for one thing:To be worn on or around the water.Far from Maui's cruise ships, the secluded Kanaha Beach Park is one of the top windsurfing and kiteboarding beaches you'll find anywhere in the world. Maui Jim's Kanaha Polarized Sunglasses with their 8-base frames of lightweight yet durable Grilamid are ready for everything from participating in fast-action sports to watching fast-action sports. Their PolarizedPlus2 lens technology goes beyond shielding your eyes from glare and harmful UV rays to reveal and enhance the colors that define that previously mentioned unobstructed view. If durability and protection against shattering are a priority, Maui Jim's polycarbonate lens material is up to the task. You'll also find nonslip rubberon nose pads to ensure your comfort and to 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 you're reaching for that extra stroke on your stand-up paddleboard or when you're reaching for that last puka shell choker at the beachside stand), a neoprene retainer or leash (sold separately) is inexpensive insurance.Lens TintNeutral Gray – this tint has the highest light reduction for rich color and contrast. Best for bright, direct sunlight.Polycarbonate LensesOffers the most shatter resistanceDurable and lightweightPolarizedPlus2 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 clarityWaterproof 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 wavesGrilamid FramesA lightweight, durable polymer with extreme bending strengthRetains its shapeGloss finishFixed saddle-style bridgeNonslip rubberon nose