Perfect for reading down by the water, the Smith Challis Bifocal Polarized Sunglasses keep your eyes totally protected from harsh UV rays while giving them a boost through magnification. Without affecting your long range field of view, a strategically placed 25mm wide magnifying segment lets you easily read fine print without straining your eyes. Polarized ChromaPop lenses eliminate offensive glare found on the water or in the mountains, while enhancing the colors around you for a truly stimulating visual experience. A hydroleophobic coating repels moisture, grease, and grime, and the anti reflective coating on the backside of the lens eliminates bothersome sidelight reflections. Keeping the fit extra comfy, hydrophilic Megol nose and temple pads stay snugly in place through slick conditions, and the stainless steel spring hinges self adjust when you're on the move. Without limiting your range of vision, Smith equipped these sunnies with an eight base curvature to keep everything in sight. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer andor birth defects or other reproductive harm.