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The Alliant offers a multi-vented half frame design to take your performance to the next level. Using an innovative new shield lens design the Alliant is undoubtedly the model of choice for the ultimate competitor. The Alliant comes equipped with Tifosi’s most versatile Fototec Light Night photochromatic lens with a Light Transmission range from 27.7% fairly dark – 75.9% virtually clear. Light Night is colour-neutral for zero colour distortion. Tifosi’s Fototec lenses adjust rapidly to changing light conditions utilising variable tint technology. Whatever the light condition Fototec lenses enhance your performance and increase your comfort by supplying superior clarity and protection. Features Grilamid TR-90 frame is lightweight and durable. Hydrophilic rubber ear and nose pieces provide a no-slip fit. Adjustable nose and arm pieces for a comfortable customised fit. Polycarbonate lenses are shatterproof scratch-resistant and optically decentered. Vented lenses increase air circulation reduce fogging. 30 grams. 100% protection from harmful UVA/UVB rays.