HD polarized technology lenses reduce glare and reflections from road, water, snow or other horizontal surfaces in your field of view. Polarized lenses not only reduce eye strain, but they also add stair and restore true color. 100% UV protection UV400 lenses provide UV400 protection, blocking 100% of UVA and UVB rays. UV protection is important, especially for the eyes, anSunglassesith UV400 lenses can protect your eyes perfectly. Made from durable TR90 material, these frames are lighter, stronger and high-quality. Houseboating, driving, fishing, hiking, water sports like sailing, kayaking or canoeing and many more outdoor activities.