The Vista Pro Clear Swim Goggles give you better vision and a more comfortable fit. The Vista Pro buckle system makes for more stability and comfort. The Vista Pro lens material is an optical grade of polycarbonate, featuring Vista anti-fog coating. The lens gives you 100% UVA and UVB protection to keep you safe. The goggles are surrounded with a leak resistant silicone skirt to make sure you always have clear, leak free vision.