The dynamic Tifosi Aethon Fototec Light Single Lens Sunglasses build on the success of the popular Alliant model, with an even taller lens ( +3mm ) and a less swept-up style, offering greater coverage across the full width of the face.As a semi-rimless design, the Aethon also offers increased flexibility, compared to full-frame Shield lens designs, for enhanced comfort and peak performance.An additional new feature is Aethon’s grippy, removable brow bar. While looking very cool in place, it can be removed to offer greater airflow over the top of the lens in warm conditions and a less obstructed view through the upper half of the lens when riding on the drops or tri-bars.The sporty crystal smoke / white Aethon 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 embedded in the lens (not just a coating on top of the lens). Whatever the light condition, Fototec lenses enhance your performance and increase your comfort by supplying superior clarity and protection.Tifosi Aethon Fototec Light Single Lens Sunglasses FeaturesFits L-XL face sizeWeight: 35 gramsGrilamid TR-90 Frame - Light & Durable Nylon MaterialGlare Guard - Reduces Eye StrainPolycarbonate Lens - Scratch-Resistant And Shatterproof MaterialHydrophilic Rubber - Increased Grip For Security, Even When You SweatUV Protection - Eye Protection From UVA/UVB RaysVented Lenses - Airflow To Prevent FoggingOptically Decentred - Eliminated Distortion And MagnificationAdjustable Ear Pieces - Limits Slippage And Increases ComfortAdjustable Nose Pieces - Limits Slippage & Increases ComfortCase Included - Zippered Case & Cleaning Bag