Thanks to the protective HTC coating (Hydrophobic Tech Coating), water droplets bead off the surface, leaving no streaks or dirt behind. This protection makes the lenses even more durable and long-lasting, ensuring sharp and clear vision. The HTC coating makes the lenses dirt-repellent, super smooth, and easy to clean. Cressi sunglasses offer higher optical quality: they block reflections and protect against UV rays. They provide sharp, detailed vision with higher contrast and protect the eyes from harmful rays. This combination enhances comfort and reduces eye fatigue. The polarized filter in Cressi sunglasses ensures clear vision without reflections and glare. Cressi's polarized sunglasses block harmful sunlight reflected from horizontal surfaces like water or roadways while allowing vertical light to reach the eye. Vertical light is important for the human eye and enhances vision.